{"title":"Ion Meter","description":null,"products":[{"product_id":"horiba-compact-calcium-meter-laquatwin-ca-11","title":"HORIBA Compact Calcium Meter LAQUAtwin Ca-11","description":"\u003cstyle\u003e\n  .laqua-product {\n    width: 100%;\n  }\n\n  .laqua-product h2 {\n    margin-top: 32px;\n    margin-bottom: 14px;\n  }\n\n  .laqua-product h3 {\n    margin: 0 0 8px;\n    font-size: 18px;\n    line-height: 1.4;\n  }\n\n  .laqua-product p {\n    line-height: 1.7;\n  }\n\n  .laqua-product ul {\n    margin-top: 0;\n    padding-left: 22px;\n  }\n\n  .laqua-product li {\n    margin-bottom: 7px;\n    line-height: 1.6;\n  }\n\n  .laqua-note {\n    margin: 14px 0 18px;\n    padding: 13px 16px;\n    border: 1px solid #d9d9d9;\n    background: #f7f7f7;\n    line-height: 1.7;\n  }\n\n  .laqua-methods {\n    margin-top: 10px;\n  }\n\n  .laqua-method {\n    display: grid;\n    grid-template-columns: minmax(0, 1fr) 230px;\n    gap: 22px;\n    align-items: center;\n    padding: 18px 0;\n    border-bottom: 1px solid #dddddd;\n  }\n\n  .laqua-method:first-child {\n    border-top: 1px solid #dddddd;\n  }\n\n  .laqua-method-text p {\n    margin: 0;\n  }\n\n  .laqua-method-image {\n    display: flex;\n    justify-content: center;\n    align-items: center;\n  }\n\n  .laqua-method-image img {\n    display: block;\n    width: 100%;\n    max-width: 230px;\n    height: auto;\n  }\n\n  .laqua-table-wrap {\n    width: 100%;\n    overflow-x: auto;\n  }\n\n  .laqua-spec-table {\n    width: 100%;\n    min-width: 620px;\n    border-collapse: collapse;\n  }\n\n  .laqua-spec-table th,\n  .laqua-spec-table td {\n    padding: 10px 12px;\n    border: 1px solid #dddddd;\n    vertical-align: top;\n    line-height: 1.6;\n  }\n\n  .laqua-spec-table th {\n    width: 31%;\n    text-align: left;\n    font-weight: 700;\n    background: #f7f7f7;\n  }\n\n  .laqua-spec-table p {\n    margin: 0 0 5px;\n  }\n\n  .laqua-spec-table p:last-child {\n    margin-bottom: 0;\n  }\n\n  .laqua-footnotes {\n    margin-top: 14px;\n    font-size: 0.92em;\n    line-height: 1.65;\n  }\n\n  .laqua-footnotes p {\n    margin: 0 0 7px;\n  }\n\n  .laqua-technical-notes {\n    margin-top: 28px;\n    border: 1px solid #dddddd;\n    background: #fafafa;\n  }\n\n  .laqua-technical-notes summary {\n    padding: 13px 16px;\n    cursor: pointer;\n    font-weight: 700;\n  }\n\n  .laqua-technical-notes-content {\n    padding: 0 16px 14px;\n  }\n\n  .laqua-technical-notes-content p {\n    margin: 8px 0 0;\n  }\n\n  @media screen and (max-width: 749px) {\n    .laqua-method {\n      grid-template-columns: 1fr;\n      gap: 12px;\n    }\n\n    .laqua-method-image {\n      justify-content: flex-start;\n    }\n\n    .laqua-method-image img {\n      max-width: 100%;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"laqua-product\"\u003e\n\u003ch2\u003eSUMMARY\u003c\/h2\u003e\n\u003cp\u003eThis compact calcium ion meter measures calcium ion concentration by applying a small amount of sample, from only 0.3 mL, directly to the flat sensor.\u003c\/p\u003e\n\u003cp\u003eLAQUAtwin's unique planar ion-selective electrode enables quick and reliable measurement in a compact, portable format.\u003c\/p\u003e\n\u003cp\u003eIt is useful for soil and crop management, food testing, coral aquarium water, and water-hardness assessment in rivers and lakes.\u003c\/p\u003e\n\u003ch2\u003eFEATURES\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMeasures calcium ion concentration from only 0.3 mL of sample\u003c\/li\u003e\n\u003cli\u003eMeasurement possible from 0.05 mL when using Sampling Sheet B\u003c\/li\u003e\n\u003cli\u003eFlat calcium ion-selective sensor with excellent selectivity\u003c\/li\u003e\n\u003cli\u003eWide measurement range from 4 to 9900 ppm (mg\/L)\u003c\/li\u003e\n\u003cli\u003eUp to two calibration points\u003c\/li\u003e\n\u003cli\u003eLow- and high-concentration calibration points can be adjusted\u003c\/li\u003e\n\u003cli\u003eTemperature sensor adjustment function\u003c\/li\u003e\n\u003cli\u003eAuto Hold function\u003c\/li\u003e\n\u003cli\u003eAuto Stability function\u003c\/li\u003e\n\u003cli\u003eBacklit monochrome digital LCD\u003c\/li\u003e\n\u003cli\u003eAutomatic power-off after 30 minutes\u003c\/li\u003e\n\u003cli\u003eRemaining battery level display\u003c\/li\u003e\n\u003cli\u003eIP67 water-resistant construction\u003c\/li\u003e\n\u003cli\u003eReplaceable sensor\u003c\/li\u003e\n\u003cli\u003ePortable storage case and measurement accessories included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVERSATILE SAMPLING METHODS\u003c\/h2\u003e\n\u003cp\u003eLAQUAtwin's flat-sensor design allows samples to be applied or collected in several convenient ways. Choose the method that suits the sample and measurement purpose.\u003c\/p\u003e\n\u003cdiv class=\"laqua-note\"\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Depending on the sample, preparation such as extraction, dilution, filtration, or the addition of pure water may be required.\u003c\/div\u003e\n\u003cdiv class=\"laqua-methods\"\u003e\n\u003cdiv class=\"laqua-method\"\u003e\n\u003cdiv class=\"laqua-method-text\"\u003e\n\u003ch3\u003eDirect Drop Measurement\u003c\/h3\u003e\n\u003cp\u003eApply a liquid sample directly to the flat sensor with a syringe, pipette, or dropper. The Ca-11 requires at least 0.3 mL for direct measurement. Sampling Sheet B allows measurement from as little as 0.05 mL.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-method-image\"\u003e\u003cimg loading=\"lazy\" alt=\"Applying a liquid sample directly to a LAQUAtwin flat sensor\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/to_drip.webp?v=1784184907\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-method\"\u003e\n\u003cdiv class=\"laqua-method-text\"\u003e\n\u003ch3\u003eImmersion Measurement\u003c\/h3\u003e\n\u003cp\u003eFor liquid samples in a beaker or container, the sensor can be immersed directly in the sample. Open the sliding cap on the sensor guard before measurement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-method-image\"\u003e\u003cimg loading=\"lazy\" alt=\"Immersing a LAQUAtwin sensor directly in a liquid sample\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Soak.webp?v=1784184907\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-method\"\u003e\n\u003cdiv class=\"laqua-method-text\"\u003e\n\u003ch3\u003eScoop Sampling\u003c\/h3\u003e\n\u003cp\u003eThe sensor guard can be used to scoop a liquid sample directly from a river, lake, tank, aquarium, or other sampling location for convenient on-site measurement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-method-image\"\u003e\u003cimg loading=\"lazy\" alt=\"Scooping a liquid sample directly with a LAQUAtwin meter\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Scoop_up.webp?v=1784184907\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-method\"\u003e\n\u003cdiv class=\"laqua-method-text\"\u003e\n\u003ch3\u003eSurface Sampling with Sampling Sheet B\u003c\/h3\u003e\n\u003cp\u003eSampling Sheet B can be moistened with pure water and used to collect a sample from a surface before being placed on the sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-method-image\"\u003e\u003cimg loading=\"lazy\" alt=\"Collecting a surface sample with a LAQUAtwin sampling sheet\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Wipe_off.webp?v=1784184907\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-method\"\u003e\n\u003cdiv class=\"laqua-method-text\"\u003e\n\u003ch3\u003eMoist Solid Samples\u003c\/h3\u003e\n\u003cp\u003eMoist solid samples such as foods can be cut into small pieces and placed directly on the flat sensor for measurement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-method-image\"\u003e\u003cimg loading=\"lazy\" alt=\"Placing a moist solid sample on a LAQUAtwin flat sensor\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Solid_matter.webp?v=1784184907\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-method\"\u003e\n\u003cdiv class=\"laqua-method-text\"\u003e\n\u003ch3\u003ePowder Samples\u003c\/h3\u003e\n\u003cp\u003ePlace the powder sample on the flat sensor and add a fixed amount of pure water before measurement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-method-image\"\u003e\u003cimg loading=\"lazy\" alt=\"Measuring a powder sample with a LAQUAtwin flat sensor\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Powder.webp?v=1784184907\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-method\"\u003e\n\u003cdiv class=\"laqua-method-text\"\u003e\n\u003ch3\u003ePaper, Textiles, and Sheet-like Samples\u003c\/h3\u003e\n\u003cp\u003eCut paper, textiles, or other sheet-like samples into small pieces, place them directly on the flat sensor, and add a fixed amount of pure water before measurement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-method-image\"\u003e\u003cimg loading=\"lazy\" alt=\"Measuring paper textile or sheet-like samples with LAQUAtwin\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Sheet-like.webp?v=1784184907\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eSPECIFICATIONS\u003c\/h2\u003e\n\u003cdiv class=\"laqua-table-wrap\"\u003e\n\u003ctable class=\"laqua-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eModel\u003c\/th\u003e\n\u003ctd\u003eLAQUAtwin-Ca-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMeasurement Principle\u003c\/th\u003e\n\u003ctd\u003eIon-selective electrode method\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRequired Sample Volume\u003c\/th\u003e\n\u003ctd\u003e0.3 mL or more\u003cbr\u003eMeasurement from 0.05 mL is possible when using Sampling Sheet B\u003csup\u003e*1\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMeasurement Range\u003c\/th\u003e\n\u003ctd\u003e4 to 9900 ppm (mg\/L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eResolution\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003e0 to 99 ppm: 1 ppm\u003c\/p\u003e\n\u003cp\u003e100 to 990 ppm: 10 ppm\u003c\/p\u003e\n\u003cp\u003e1000 to 9900 ppm: 100 ppm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTemperature Display Range \/ Resolution\u003c\/th\u003e\n\u003ctd\u003e0 to 50°C \/ 0.1°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCalibration\u003c\/th\u003e\n\u003ctd\u003eUp to 2 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAccuracy\u003c\/th\u003e\n\u003ctd\u003e±20% of the reading\u003csup\u003e*2\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMain Functions\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003eAdjustable low- and high-concentration calibration points\u003c\/p\u003e\n\u003cp\u003eTemperature sensor adjustment function\u003c\/p\u003e\n\u003cp\u003eAuto Hold\u003c\/p\u003e\n\u003cp\u003eAuto Stability function\u003c\/p\u003e\n\u003cp\u003eAutomatic power-off after 30 minutes\u003c\/p\u003e\n\u003cp\u003eRemaining battery level display\u003c\/p\u003e\n\u003cp\u003eReplaceable sensor\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWater Resistance\u003c\/th\u003e\n\u003ctd\u003eIP67\u003csup\u003e*3\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay\u003c\/th\u003e\n\u003ctd\u003eCustom monochrome digital LCD with backlight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOperating Environment\u003c\/th\u003e\n\u003ctd\u003e5 to 40°C, 85% relative humidity or less, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003eTwo 3 V CR2032 coin-type lithium batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBattery Life\u003c\/th\u003e\n\u003ctd\u003eApproximately 400 hours of continuous use with the backlight switched off\u003csup\u003e*4\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMain Material\u003c\/th\u003e\n\u003ctd\u003eABS resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDimensions and Weight\u003c\/th\u003e\n\u003ctd\u003eW164 × H29 × D20 mm, excluding protruding parts\u003cbr\u003eApproximately 50 g, excluding batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eIncluded Accessories\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003eCalcium ion sensor\u003c\/p\u003e\n\u003cp\u003eTwo CR2032 coin-type lithium batteries\u003c\/p\u003e\n\u003cp\u003eOne syringe\u003c\/p\u003e\n\u003cp\u003eInstruction manual\u003c\/p\u003e\n\u003cp\u003eQuick manual\u003c\/p\u003e\n\u003cp\u003eStorage case\u003c\/p\u003e\n\u003cp\u003e150 ppm calcium ion standard solution, 14 mL × 1 bottle\u003c\/p\u003e\n\u003cp\u003e2000 ppm calcium ion standard solution, 14 mL × 1 bottle\u003c\/p\u003e\n\u003cp\u003eSampling Sheet B × 5 sheets\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMain Consumables\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003eS050: Calcium ion sensor\u003c\/p\u003e\n\u003cp\u003eY051H: 2000 ppm calcium ion standard solution\u003c\/p\u003e\n\u003cp\u003eY051L: 150 ppm calcium ion standard solution\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-footnotes\"\u003e\n\u003cp\u003e\u003cstrong\u003e*1\u003c\/strong\u003e Measurement is possible from 0.05 mL when using Sampling Sheet B. Close the sensor cover during measurement. For samples containing fine particles, use a separate sampling-sheet retaining cover.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e*2\u003c\/strong\u003e Indicates repeatability when the same standard solution is measured after calibration with that standard solution. Error in the standard solution and rounding error of ±1 digit are not included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e*3\u003c\/strong\u003e Equivalent to IP67. The meter will not fail after immersion in water at a depth of 1 m for 30 minutes. It cannot be used underwater.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e*4\u003c\/strong\u003e Battery life is reduced to approximately one-third when the backlight is used. The backlight remains illuminated for approximately 20 seconds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdetails class=\"laqua-technical-notes\"\u003e\n\u003csummary\u003eTechnical Measurement Notes\u003c\/summary\u003e\n\u003cdiv class=\"laqua-technical-notes-content\"\u003e\n\u003cp\u003eMeasurement values may be affected by ions other than calcium contained in the sample.\u003c\/p\u003e\n\u003cp\u003eThe reference pH range for the calcium ion sensor is pH 4 to 12 at a calcium concentration of 10\u003csup\u003e−3\u003c\/sup\u003e mol\/L.\u003c\/p\u003e\n\u003cp\u003eReported selectivity coefficients relative to calcium include Fe\u003csup\u003e2+\u003c\/sup\u003e and Zn\u003csup\u003e2+\u003c\/sup\u003e at 1, Fe\u003csup\u003e3+\u003c\/sup\u003e at 10, and Cu\u003csup\u003e2+\u003c\/sup\u003e at 1 × 10\u003csup\u003e−2\u003c\/sup\u003e.\u003c\/p\u003e\n\u003cp\u003eFor quantitative comparisons, keep the sample preparation, dilution or extraction ratio, temperature, calibration procedure, and measurement conditions consistent.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"HORIBA","offers":[{"title":"Default Title","offer_id":40160110673963,"sku":"4540565006971","price":63639.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/products\/4540565006971.jpg?v=1655456751"},{"product_id":"horiba-compact-potassium-ion-meter-laquatwin-k-11","title":"HORIBA Compact Potassium Meter LAQUAtwin K-11","description":"\u003cstyle\u003e\n  .laqua-k11 {\n    width: 100%;\n  }\n\n  .laqua-k11 h2 {\n    margin-top: 32px;\n    margin-bottom: 14px;\n  }\n\n  .laqua-k11 h3 {\n    margin: 0 0 8px;\n    font-size: 18px;\n    line-height: 1.4;\n  }\n\n  .laqua-k11 p {\n    line-height: 1.7;\n  }\n\n  .laqua-k11 ul {\n    margin-top: 0;\n    padding-left: 22px;\n  }\n\n  .laqua-k11 li {\n    margin-bottom: 7px;\n    line-height: 1.6;\n  }\n\n  .laqua-k11-note {\n    margin: 14px 0 18px;\n    padding: 13px 16px;\n    border: 1px solid #d9d9d9;\n    background: #f7f7f7;\n    line-height: 1.7;\n  }\n\n  .laqua-k11-methods {\n    margin-top: 10px;\n  }\n\n  .laqua-k11-method {\n    display: grid;\n    grid-template-columns: minmax(0, 1fr) 230px;\n    gap: 22px;\n    align-items: center;\n    padding: 18px 0;\n    border-bottom: 1px solid #dddddd;\n  }\n\n  .laqua-k11-method:first-child {\n    border-top: 1px solid #dddddd;\n  }\n\n  .laqua-k11-method-text p {\n    margin: 0;\n  }\n\n  .laqua-k11-method-image {\n    display: flex;\n    justify-content: center;\n    align-items: center;\n  }\n\n  .laqua-k11-method-image img {\n    display: block;\n    width: 100%;\n    max-width: 230px;\n    height: auto;\n  }\n\n  .laqua-k11-table-wrap {\n    width: 100%;\n    overflow-x: auto;\n  }\n\n  .laqua-k11-spec-table {\n    width: 100%;\n    min-width: 620px;\n    border-collapse: collapse;\n  }\n\n  .laqua-k11-spec-table th,\n  .laqua-k11-spec-table td {\n    padding: 10px 12px;\n    border: 1px solid #dddddd;\n    vertical-align: top;\n    line-height: 1.6;\n  }\n\n  .laqua-k11-spec-table th {\n    width: 31%;\n    text-align: left;\n    font-weight: 700;\n    background: #f7f7f7;\n  }\n\n  .laqua-k11-spec-table p {\n    margin: 0 0 5px;\n  }\n\n  .laqua-k11-spec-table p:last-child {\n    margin-bottom: 0;\n  }\n\n  .laqua-k11-footnotes {\n    margin-top: 14px;\n    font-size: 0.92em;\n    line-height: 1.65;\n  }\n\n  .laqua-k11-footnotes p {\n    margin: 0 0 7px;\n  }\n\n  .laqua-k11-technical-notes {\n    margin-top: 28px;\n    border: 1px solid #dddddd;\n    background: #fafafa;\n  }\n\n  .laqua-k11-technical-notes summary {\n    padding: 13px 16px;\n    cursor: pointer;\n    font-weight: 700;\n  }\n\n  .laqua-k11-technical-notes-content {\n    padding: 0 16px 14px;\n  }\n\n  .laqua-k11-technical-notes-content p {\n    margin: 8px 0 0;\n  }\n\n  @media screen and (max-width: 749px) {\n    .laqua-k11-method {\n      grid-template-columns: 1fr;\n      gap: 12px;\n    }\n\n    .laqua-k11-method-image {\n      justify-content: flex-start;\n    }\n\n    .laqua-k11-method-image img {\n      max-width: 100%;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"laqua-k11\"\u003e\n\u003ch2\u003eSUMMARY\u003c\/h2\u003e\n\u003cp\u003eThis compact potassium ion meter measures potassium ion concentration by applying a small amount of sample, from only 0.3 mL, directly to the flat sensor.\u003c\/p\u003e\n\u003cp\u003eLAQUAtwin's unique planar ion-selective electrode enables quick and reliable measurement in a compact, portable format.\u003c\/p\u003e\n\u003cp\u003eIt is especially useful for measuring potassium ions in soil extracts and hydroponic nutrient solutions.\u003c\/p\u003e\n\u003ch2\u003eFEATURES\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMeasures potassium ion concentration from only 0.3 mL of sample\u003c\/li\u003e\n\u003cli\u003eMeasurement possible from 0.05 mL when using Sampling Sheet B\u003c\/li\u003e\n\u003cli\u003eFlat potassium ion-selective sensor with excellent selectivity\u003c\/li\u003e\n\u003cli\u003eWide measurement range from 4 to 9900 ppm (mg\/L)\u003c\/li\u003e\n\u003cli\u003eUp to two calibration points\u003c\/li\u003e\n\u003cli\u003eLow- and high-concentration calibration points can be adjusted\u003c\/li\u003e\n\u003cli\u003eTemperature sensor adjustment function\u003c\/li\u003e\n\u003cli\u003eAuto Hold function\u003c\/li\u003e\n\u003cli\u003eAuto Stability function\u003c\/li\u003e\n\u003cli\u003eBacklit monochrome digital LCD\u003c\/li\u003e\n\u003cli\u003eAutomatic power-off after 30 minutes\u003c\/li\u003e\n\u003cli\u003eRemaining battery level display\u003c\/li\u003e\n\u003cli\u003eIP67 water-resistant construction\u003c\/li\u003e\n\u003cli\u003eReplaceable sensor\u003c\/li\u003e\n\u003cli\u003ePortable storage case and measurement accessories included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVERSATILE SAMPLING METHODS\u003c\/h2\u003e\n\u003cp\u003eLAQUAtwin's flat-sensor design allows samples to be applied or collected in several convenient ways. Choose the method that suits the sample and measurement purpose.\u003c\/p\u003e\n\u003cdiv class=\"laqua-k11-note\"\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Depending on the sample, preparation such as extraction, dilution, filtration, or the addition of pure water may be required.\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-methods\"\u003e\n\u003cdiv class=\"laqua-k11-method\"\u003e\n\u003cdiv class=\"laqua-k11-method-text\"\u003e\n\u003ch3\u003eDirect Drop Measurement\u003c\/h3\u003e\n\u003cp\u003eApply a liquid sample directly to the flat sensor with a syringe, pipette, or dropper. The K-11 requires at least 0.3 mL for direct measurement. Sampling Sheet B allows measurement from as little as 0.05 mL.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-method-image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/to_drip.webp?v=1784184907\" alt=\"Applying a liquid sample directly to a LAQUAtwin flat sensor\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-method\"\u003e\n\u003cdiv class=\"laqua-k11-method-text\"\u003e\n\u003ch3\u003eImmersion Measurement\u003c\/h3\u003e\n\u003cp\u003eFor liquid samples in a beaker or container, the sensor can be immersed directly in the sample. Open the sliding cap on the sensor guard before measurement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-method-image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Soak.webp?v=1784184907\" alt=\"Immersing a LAQUAtwin sensor directly in a liquid sample\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-method\"\u003e\n\u003cdiv class=\"laqua-k11-method-text\"\u003e\n\u003ch3\u003eScoop Sampling\u003c\/h3\u003e\n\u003cp\u003eThe sensor guard can be used to scoop a liquid sample directly from a river, tank, nutrient solution, or other sampling location for convenient on-site measurement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-method-image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Scoop_up.webp?v=1784184907\" alt=\"Scooping a liquid sample directly with a LAQUAtwin meter\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-method\"\u003e\n\u003cdiv class=\"laqua-k11-method-text\"\u003e\n\u003ch3\u003eSurface Sampling with Sampling Sheet B\u003c\/h3\u003e\n\u003cp\u003eSampling Sheet B can be moistened with pure water and used to collect a sample from a surface before being placed on the sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-method-image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Wipe_off.webp?v=1784184907\" alt=\"Collecting a surface sample with a LAQUAtwin sampling sheet\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-method\"\u003e\n\u003cdiv class=\"laqua-k11-method-text\"\u003e\n\u003ch3\u003eMoist Solid Samples\u003c\/h3\u003e\n\u003cp\u003eMoist solid samples such as foods can be cut into small pieces and placed directly on the flat sensor for measurement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-method-image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Solid_matter.webp?v=1784184907\" alt=\"Placing a moist solid sample on a LAQUAtwin flat sensor\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-method\"\u003e\n\u003cdiv class=\"laqua-k11-method-text\"\u003e\n\u003ch3\u003ePowder Samples\u003c\/h3\u003e\n\u003cp\u003ePlace the powder sample on the flat sensor and add a fixed amount of pure water before measurement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-method-image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Powder.webp?v=1784184907\" alt=\"Measuring a powder sample with a LAQUAtwin flat sensor\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-method\"\u003e\n\u003cdiv class=\"laqua-k11-method-text\"\u003e\n\u003ch3\u003ePaper, Textiles, and Sheet-like Samples\u003c\/h3\u003e\n\u003cp\u003eCut paper, textiles, or other sheet-like samples into small pieces, place them directly on the flat sensor, and add a fixed amount of pure water before measurement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-method-image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Sheet-like.webp?v=1784184907\" alt=\"Measuring paper textile or sheet-like samples with LAQUAtwin\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eSPECIFICATIONS\u003c\/h2\u003e\n\u003cdiv class=\"laqua-k11-table-wrap\"\u003e\n\u003ctable class=\"laqua-k11-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eModel\u003c\/th\u003e\n\u003ctd\u003eLAQUAtwin-K-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMeasurement Principle\u003c\/th\u003e\n\u003ctd\u003eIon-selective electrode method\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRequired Sample Volume\u003c\/th\u003e\n\u003ctd\u003e0.3 mL or more\u003cbr\u003eMeasurement from 0.05 mL is possible when using Sampling Sheet B\u003csup\u003e*1\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMeasurement Range\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003e4 to 9900 ppm (mg\/L)\u003c\/p\u003e\n\u003cp\u003e2 to 5000 kg\/10a\u003csup\u003e*2\u003c\/sup\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eResolution\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003e0 to 99 ppm: 1 ppm\u003c\/p\u003e\n\u003cp\u003e100 to 990 ppm: 10 ppm\u003c\/p\u003e\n\u003cp\u003e1000 to 9900 ppm: 100 ppm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTemperature Display Range \/ Resolution\u003c\/th\u003e\n\u003ctd\u003e0 to 50°C \/ 0.1°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCalibration\u003c\/th\u003e\n\u003ctd\u003eUp to 2 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAccuracy\u003c\/th\u003e\n\u003ctd\u003e±10% of the reading\u003csup\u003e*3\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMain Functions\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003eAdjustable low- and high-concentration calibration points\u003c\/p\u003e\n\u003cp\u003eTemperature sensor adjustment function\u003c\/p\u003e\n\u003cp\u003eAuto Hold\u003c\/p\u003e\n\u003cp\u003eAuto Stability function\u003c\/p\u003e\n\u003cp\u003eAutomatic power-off after 30 minutes\u003c\/p\u003e\n\u003cp\u003eRemaining battery level display\u003c\/p\u003e\n\u003cp\u003eReplaceable sensor\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWater Resistance\u003c\/th\u003e\n\u003ctd\u003eIP67\u003csup\u003e*4\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDisplay\u003c\/th\u003e\n\u003ctd\u003eCustom monochrome digital LCD with backlight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOperating Environment\u003c\/th\u003e\n\u003ctd\u003e5 to 40°C, 85% relative humidity or less, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003eTwo 3 V CR2032 coin-type lithium batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBattery Life\u003c\/th\u003e\n\u003ctd\u003eApproximately 400 hours of continuous use with the backlight switched off\u003csup\u003e*5\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMain Material\u003c\/th\u003e\n\u003ctd\u003eABS resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDimensions and Weight\u003c\/th\u003e\n\u003ctd\u003eW164 × H29 × D20 mm, excluding protruding parts\u003cbr\u003eApproximately 50 g, excluding batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eIncluded Accessories\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003ePotassium ion sensor\u003c\/p\u003e\n\u003cp\u003eTwo CR2032 coin-type lithium batteries\u003c\/p\u003e\n\u003cp\u003eOne syringe\u003c\/p\u003e\n\u003cp\u003eInstruction manual\u003c\/p\u003e\n\u003cp\u003eQuick manual\u003c\/p\u003e\n\u003cp\u003eStorage case\u003c\/p\u003e\n\u003cp\u003e150 ppm potassium ion standard solution, 14 mL × 1 bottle\u003c\/p\u003e\n\u003cp\u003e2000 ppm potassium ion standard solution, 14 mL × 1 bottle\u003c\/p\u003e\n\u003cp\u003eSampling Sheet B × 5 sheets\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMain Consumables\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003eS030: Potassium ion sensor\u003c\/p\u003e\n\u003cp\u003eY031H: 2000 ppm potassium ion standard solution\u003c\/p\u003e\n\u003cp\u003eY031L: 150 ppm potassium ion standard solution\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"laqua-k11-footnotes\"\u003e\n\u003cp\u003e\u003cstrong\u003e*1\u003c\/strong\u003e Measurement is possible from 0.05 mL when using Sampling Sheet B. Close the sensor cover during measurement. For samples containing fine particles, use a separate sampling sheet holder cover.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e*2\u003c\/strong\u003e Applicable when the soil-to-water extraction ratio is 1:5.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e*3\u003c\/strong\u003e Indicates repeatability when the same standard solution is measured after calibration with that standard solution. Error in the standard solution and rounding error of ±1 digit are not included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e*4\u003c\/strong\u003e Equivalent to IP67. The meter will not fail after immersion in water at a depth of 1 m for 30 minutes. It cannot be used underwater.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e*5\u003c\/strong\u003e Battery life is reduced to approximately one-third when the backlight is used. The backlight remains illuminated for approximately 20 seconds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdetails class=\"laqua-k11-technical-notes\"\u003e\n\u003csummary\u003eTechnical Measurement Notes\u003c\/summary\u003e\n\u003cdiv class=\"laqua-k11-technical-notes-content\"\u003e\n\u003cp\u003eMeasurement values may be affected by ions other than potassium contained in the sample.\u003c\/p\u003e\n\u003cp\u003eThe reference pH range for the potassium ion sensor is pH 2 to 9 at a potassium concentration of 10\u003csup\u003e−3\u003c\/sup\u003e mol\/L.\u003c\/p\u003e\n\u003cp\u003eThe stated selectivity coefficient for rubidium ions (Rb\u003csup\u003e+\u003c\/sup\u003e) is 1 × 10\u003csup\u003e−1\u003c\/sup\u003e relative to potassium.\u003c\/p\u003e\n\u003cp\u003eFor quantitative comparisons, keep the sample preparation, dilution or extraction ratio, temperature, calibration procedure, and measurement conditions consistent.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"HORIBA","offers":[{"title":"Default Title","offer_id":41219662905387,"sku":"4540565006964","price":63639.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/MzAwL2l0ZW1zLzMzNzMvazExLmpwZw.jpg?v=1732064004"},{"product_id":"horiba-compact-sodium-ion-meter-laquatwin-na-11","title":"HORIBA Compact Sodium Ion Meter LAQUAtwin Na-11","description":"\u003cstyle\u003e\n  .laqua-product {\n    width: 100%;\n  }\n\n  .laqua-product h2 {\n    margin-top: 32px;\n    margin-bottom: 14px;\n  }\n\n  .laqua-product h3 {\n    margin: 0 0 8px;\n    font-size: 18px;\n    line-height: 1.4;\n  }\n\n  .laqua-product p {\n    line-height: 1.7;\n  }\n\n  .laqua-product ul {\n    margin-top: 0;\n    padding-left: 22px;\n  }\n\n  .laqua-product li {\n    margin-bottom: 7px;\n    line-height: 1.6;\n  }\n\n  .laqua-note {\n    margin: 14px 0 18px;\n    padding: 13px 16px;\n    border: 1px solid #d9d9d9;\n    background: #f7f7f7;\n    line-height: 1.7;\n  }\n\n  .laqua-methods {\n    margin-top: 10px;\n  }\n\n  .laqua-method {\n    display: grid;\n    grid-template-columns: minmax(0, 1fr) 230px;\n    gap: 22px;\n    align-items: center;\n    padding: 18px 0;\n    border-bottom: 1px solid #dddddd;\n  }\n\n  .laqua-method:first-child {\n    border-top: 1px solid #dddddd;\n  }\n\n  .laqua-method-text p {\n    margin: 0;\n  }\n\n  .laqua-method-image {\n    display: flex;\n    justify-content: center;\n    align-items: center;\n  }\n\n  .laqua-method-image img {\n    display: block;\n    width: 100%;\n    max-width: 230px;\n    height: auto;\n  }\n\n  .laqua-table-wrap {\n    width: 100%;\n    overflow-x: auto;\n  }\n\n  .laqua-spec-table {\n    width: 100%;\n    min-width: 620px;\n    border-collapse: collapse;\n  }\n\n  .laqua-spec-table th,\n  .laqua-spec-table td {\n    padding: 10px 12px;\n    border: 1px solid #dddddd;\n    vertical-align: top;\n    line-height: 1.6;\n  }\n\n  .laqua-spec-table th {\n    width: 31%;\n    text-align: left;\n    font-weight: 700;\n    background: #f7f7f7;\n  }\n\n  .laqua-spec-table p {\n    margin: 0 0 5px;\n  }\n\n  .laqua-spec-table p:last-child {\n    margin-bottom: 0;\n  }\n\n  .laqua-footnotes {\n    margin-top: 14px;\n    font-size: 0.92em;\n    line-height: 1.65;\n  }\n\n  .laqua-footnotes p {\n    margin: 0 0 7px;\n  }\n\n  .laqua-technical-notes {\n    margin-top: 28px;\n    border: 1px solid #dddddd;\n    background: #fafafa;\n  }\n\n  .laqua-technical-notes summary {\n    padding: 13px 16px;\n    cursor: pointer;\n    font-weight: 700;\n  }\n\n  .laqua-technical-notes-content {\n    padding: 0 16px 14px;\n  }\n\n  .laqua-technical-notes-content p {\n    margin: 8px 0 0;\n  }\n\n  @media screen and (max-width: 749px) {\n    .laqua-method {\n      grid-template-columns: 1fr;\n      gap: 12px;\n    }\n\n    .laqua-method-image {\n      justify-content: flex-start;\n    }\n\n    .laqua-method-image img {\n      max-width: 100%;\n    }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"laqua-product\"\u003e\n\n  \u003ch2\u003eSUMMARY\u003c\/h2\u003e\n\n  \u003cp\u003e\n    This compact sodium ion meter measures sodium ion concentration by applying\n    a small amount of sample, from only 0.3 mL, directly to the flat sensor.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    LAQUAtwin's unique planar ion-selective electrode enables quick and reliable\n    measurement in a compact, portable format.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    It is useful for food and process control, health-related sodium assessment,\n    environmental testing, and the management of salt damage in agriculture.\n  \u003c\/p\u003e\n\n\n  \u003ch2\u003eFEATURES\u003c\/h2\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n      Measures sodium ion concentration from only 0.3 mL of sample\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Measurement possible from 0.05 mL when using Sampling Sheet B\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Flat sodium ion-selective sensor with excellent selectivity\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Wide measurement range from 2 to 9900 ppm (mg\/L)\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Up to two calibration points\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Automatic recognition of the default 150 ppm and 2000 ppm standard solutions\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Low- and high-concentration calibration points can be adjusted\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Multiplication compensation from 0.01 to 9.90\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Sodium concentration, temperature, and mV display modes\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Temperature sensor adjustment function\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Auto Hold function\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Auto Stability function\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Backlit monochrome digital LCD\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Automatic power-off after 30 minutes\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Remaining battery level display\n    \u003c\/li\u003e\n    \u003cli\u003e\n      IP67 water-resistant construction\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Replaceable sensor\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Portable storage case and measurement accessories included\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\n  \u003ch2\u003eVERSATILE SAMPLING METHODS\u003c\/h2\u003e\n\n  \u003cp\u003e\n    LAQUAtwin's flat-sensor design allows samples to be applied or collected in\n    several convenient ways. Choose the method that suits the sample and\n    measurement purpose.\n  \u003c\/p\u003e\n\n  \u003cdiv class=\"laqua-note\"\u003e\n    \u003cstrong\u003eNote:\u003c\/strong\u003e\n    Depending on the sample, preparation such as extraction, dilution,\n    filtration, or the addition of pure water may be required. Measurements of\n    solid, powder, or sheet-like samples may be used as reference values unless\n    an established sample-preparation method is followed.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"laqua-methods\"\u003e\n\n    \u003cdiv class=\"laqua-method\"\u003e\n      \u003cdiv class=\"laqua-method-text\"\u003e\n        \u003ch3\u003eDirect Drop Measurement\u003c\/h3\u003e\n        \u003cp\u003e\n          Apply a liquid sample directly to the flat sensor with a syringe,\n          pipette, or dropper. The Na-11 requires at least 0.3 mL for direct\n          measurement. Sampling Sheet B allows measurement from as little as\n          0.05 mL.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"laqua-method-image\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/to_drip.webp?v=1784184907\" alt=\"Applying a liquid sample directly to a LAQUAtwin sodium ion sensor\" loading=\"lazy\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\n    \u003cdiv class=\"laqua-method\"\u003e\n      \u003cdiv class=\"laqua-method-text\"\u003e\n        \u003ch3\u003eImmersion Measurement\u003c\/h3\u003e\n        \u003cp\u003e\n          For liquid samples in a beaker or container, the sensor can be\n          immersed directly in the sample. Open the sliding cap on the sensor\n          guard before measurement.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"laqua-method-image\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Soak.webp?v=1784184907\" alt=\"Immersing a LAQUAtwin sodium ion sensor directly in a liquid sample\" loading=\"lazy\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\n    \u003cdiv class=\"laqua-method\"\u003e\n      \u003cdiv class=\"laqua-method-text\"\u003e\n        \u003ch3\u003eScoop Sampling\u003c\/h3\u003e\n        \u003cp\u003e\n          The sensor guard can be used to scoop a liquid sample directly from\n          a river, lake, tank, process line, or other sampling location for\n          convenient on-site measurement.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"laqua-method-image\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Scoop_up.webp?v=1784184907\" alt=\"Scooping a liquid sample directly with a LAQUAtwin sodium ion meter\" loading=\"lazy\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\n    \u003cdiv class=\"laqua-method\"\u003e\n      \u003cdiv class=\"laqua-method-text\"\u003e\n        \u003ch3\u003eMoist Solid Samples\u003c\/h3\u003e\n        \u003cp\u003e\n          Moist solid samples such as foods can be cut into small pieces and\n          placed directly on the flat sensor when sufficient liquid makes\n          contact with the electrode.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"laqua-method-image\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Solid_matter.webp?v=1784184907\" alt=\"Placing a moist solid sample on a LAQUAtwin sodium ion sensor\" loading=\"lazy\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\n    \u003cdiv class=\"laqua-method\"\u003e\n      \u003cdiv class=\"laqua-method-text\"\u003e\n        \u003ch3\u003ePowder Samples\u003c\/h3\u003e\n        \u003cp\u003e\n          Place the powder sample on the flat sensor and add a fixed amount of\n          pure water before measurement. Keep the sample amount and water\n          volume consistent when comparing results.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"laqua-method-image\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Powder.webp?v=1784184907\" alt=\"Measuring a powder sample with a LAQUAtwin sodium ion sensor\" loading=\"lazy\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\n    \u003cdiv class=\"laqua-method\"\u003e\n      \u003cdiv class=\"laqua-method-text\"\u003e\n        \u003ch3\u003ePaper, Textiles, and Sheet-like Samples\u003c\/h3\u003e\n        \u003cp\u003e\n          Cut paper, textiles, or other sheet-like samples into small pieces,\n          place them on the flat sensor, and add a fixed amount of pure water\n          before measurement.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"laqua-method-image\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Sheet-like.webp?v=1784184907\" alt=\"Measuring paper textile or sheet-like samples with a LAQUAtwin sodium ion meter\" loading=\"lazy\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n\n  \u003ch2\u003eSPECIFICATIONS\u003c\/h2\u003e\n\n  \u003cdiv class=\"laqua-table-wrap\"\u003e\n    \u003ctable class=\"laqua-spec-table\"\u003e\n      \u003ctbody\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eModel\u003c\/th\u003e\n          \u003ctd\u003eLAQUAtwin-Na-11\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eMeasurement Principle\u003c\/th\u003e\n          \u003ctd\u003eIon-selective electrode method\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eRequired Sample Volume\u003c\/th\u003e\n          \u003ctd\u003e\n            0.3 mL or more\u003cbr\u003e\n            Measurement from 0.05 mL is possible when using Sampling Sheet\n            B\u003csup\u003e*1\u003c\/sup\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eMeasurement Range\u003c\/th\u003e\n          \u003ctd\u003e\n            \u003cp\u003e2 to 9900 ppm (mg\/L)\u003c\/p\u003e\n            \u003cp\u003e0.1 to 430 mmol\/L\u003c\/p\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eResolution\u003c\/th\u003e\n          \u003ctd\u003e\n            \u003cp\u003e2 to 99 ppm: 1 ppm\u003c\/p\u003e\n            \u003cp\u003e100 to 990 ppm: 10 ppm\u003c\/p\u003e\n            \u003cp\u003e1000 to 9900 ppm: 100 ppm\u003c\/p\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eTemperature Display Range \/ Resolution\u003c\/th\u003e\n          \u003ctd\u003e0 to 50°C \/ 0.1°C\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eCalibration\u003c\/th\u003e\n          \u003ctd\u003e\n            Up to 2 points\u003cbr\u003e\n            Default calibration values: 150 ppm and 2000 ppm\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eAccuracy\u003c\/th\u003e\n          \u003ctd\u003e±10% of the reading\u003csup\u003e*2\u003c\/sup\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eMain Functions\u003c\/th\u003e\n          \u003ctd\u003e\n            \u003cp\u003eAutomatic recognition of 150 ppm and 2000 ppm standard solutions\u003c\/p\u003e\n            \u003cp\u003eAdjustable low- and high-concentration calibration points\u003c\/p\u003e\n            \u003cp\u003eMultiplication compensation: 0.01 to 9.90\u003c\/p\u003e\n            \u003cp\u003eSodium concentration, temperature, and mV display\u003c\/p\u003e\n            \u003cp\u003eTemperature sensor adjustment function\u003c\/p\u003e\n            \u003cp\u003eAuto Hold\u003c\/p\u003e\n            \u003cp\u003eAuto Stability function\u003c\/p\u003e\n            \u003cp\u003eAutomatic power-off after 30 minutes\u003c\/p\u003e\n            \u003cp\u003eRemaining battery level display\u003c\/p\u003e\n            \u003cp\u003eReplaceable sensor\u003c\/p\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eWater Resistance\u003c\/th\u003e\n          \u003ctd\u003eIP67\u003csup\u003e*3\u003c\/sup\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eDisplay\u003c\/th\u003e\n          \u003ctd\u003eCustom monochrome digital LCD with backlight\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eOperating Environment\u003c\/th\u003e\n          \u003ctd\u003e\n            5 to 40°C, 85% relative humidity or less, non-condensing\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003ePower Supply\u003c\/th\u003e\n          \u003ctd\u003eTwo 3 V CR2032 coin-type lithium batteries\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eBattery Life\u003c\/th\u003e\n          \u003ctd\u003e\n            Approximately 400 hours of continuous use with the backlight\n            switched off\u003csup\u003e*4\u003c\/sup\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eMain Material\u003c\/th\u003e\n          \u003ctd\u003eABS resin\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eDimensions and Weight\u003c\/th\u003e\n          \u003ctd\u003e\n            W164 × H29 × D20 mm, excluding protruding parts\u003cbr\u003e\n            Approximately 50 g, excluding batteries\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eIncluded Accessories\u003c\/th\u003e\n          \u003ctd\u003e\n            \u003cp\u003eSodium ion sensor\u003c\/p\u003e\n            \u003cp\u003eTwo CR2032 coin-type lithium batteries\u003c\/p\u003e\n            \u003cp\u003eOne syringe\u003c\/p\u003e\n            \u003cp\u003eInstruction manual\u003c\/p\u003e\n            \u003cp\u003eQuick manual\u003c\/p\u003e\n            \u003cp\u003eStorage case\u003c\/p\u003e\n            \u003cp\u003e150 ppm sodium ion standard solution, 14 mL × 1 bottle\u003c\/p\u003e\n            \u003cp\u003e2000 ppm sodium ion standard solution, 14 mL × 1 bottle\u003c\/p\u003e\n            \u003cp\u003eSampling Sheet B × 5 sheets\u003c\/p\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eMain Consumables\u003c\/th\u003e\n          \u003ctd\u003e\n            \u003cp\u003eS022: Sodium ion sensor\u003c\/p\u003e\n            \u003cp\u003eY022H: 2000 ppm sodium ion standard solution\u003c\/p\u003e\n            \u003cp\u003eY022L: 150 ppm sodium ion standard solution\u003c\/p\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n\n  \u003cdiv class=\"laqua-footnotes\"\u003e\n\n    \u003cp\u003e\n      \u003cstrong\u003e*1\u003c\/strong\u003e\n      Measurement is possible from 0.05 mL when using Sampling Sheet B.\n      Close the sensor cover during measurement. For samples containing fine\n      particles, use a separate sampling-sheet retaining cover.\n    \u003c\/p\u003e\n\n    \u003cp\u003e\n      \u003cstrong\u003e*2\u003c\/strong\u003e\n      Indicates repeatability when the same standard solution is measured after\n      calibration with that standard solution. Error in the standard solution\n      and rounding error of ±1 digit are not included.\n    \u003c\/p\u003e\n\n    \u003cp\u003e\n      \u003cstrong\u003e*3\u003c\/strong\u003e\n      Equivalent to IP67. The meter will not fail after immersion in water at a\n      depth of 1 m for 30 minutes. It cannot be used underwater.\n    \u003c\/p\u003e\n\n    \u003cp\u003e\n      \u003cstrong\u003e*4\u003c\/strong\u003e\n      Battery life is reduced to approximately one-third when the backlight is\n      used. The backlight remains illuminated for approximately 20 seconds.\n    \u003c\/p\u003e\n\n  \u003c\/div\u003e\n\n\n  \u003cdetails class=\"laqua-technical-notes\"\u003e\n    \u003csummary\u003eTechnical Measurement Notes\u003c\/summary\u003e\n\n    \u003cdiv class=\"laqua-technical-notes-content\"\u003e\n      \u003cp\u003e\n        The displayed result represents sodium ion concentration. It is not a\n        direct measurement of total salt or sodium chloride concentration.\n      \u003c\/p\u003e\n\n      \u003cp\u003e\n        Measurement values may be affected by ions other than sodium contained\n        in the sample.\n      \u003c\/p\u003e\n\n      \u003cp\u003e\n        The reference pH range for the sodium ion sensor is pH 3 to 9 at a\n        sodium concentration of 10\u003csup\u003e−3\u003c\/sup\u003e mol\/L.\n      \u003c\/p\u003e\n\n      \u003cp\u003e\n        The stated selectivity coefficient for potassium ions\n        (K\u003csup\u003e+\u003c\/sup\u003e) and rubidium ions (Rb\u003csup\u003e+\u003c\/sup\u003e) is\n        1 × 10\u003csup\u003e−2\u003c\/sup\u003e relative to sodium.\n      \u003c\/p\u003e\n\n      \u003cp\u003e\n        For quantitative comparisons, keep the sample preparation, dilution or\n        extraction ratio, temperature, calibration procedure, and measurement\n        conditions consistent.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"HORIBA","offers":[{"title":"Default Title","offer_id":44413562716203,"sku":"4540565006957","price":63639.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/csm_Na-11-HORIBA_dfcd99c0dc_8d62b889-de93-48c9-b0ad-238af5c251e1.webp?v=1784256940"},{"product_id":"horiba-compact-nitrate-ion-meter-laquatwin-no3-11","title":"HORIBA Compact Nitrate Ion Meter LAQUAtwin NO3-11","description":"\u003cstyle\u003e\n  .laqua-product {\n    width: 100%;\n  }\n\n  .laqua-product h2 {\n    margin-top: 32px;\n    margin-bottom: 14px;\n  }\n\n  .laqua-product h3 {\n    margin: 0 0 8px;\n    font-size: 18px;\n    line-height: 1.4;\n  }\n\n  .laqua-product p {\n    line-height: 1.7;\n  }\n\n  .laqua-product ul {\n    margin-top: 0;\n    padding-left: 22px;\n  }\n\n  .laqua-product li {\n    margin-bottom: 7px;\n    line-height: 1.6;\n  }\n\n  .laqua-note {\n    margin: 14px 0 18px;\n    padding: 13px 16px;\n    border: 1px solid #d9d9d9;\n    background: #f7f7f7;\n    line-height: 1.7;\n  }\n\n  .laqua-methods {\n    margin-top: 10px;\n  }\n\n  .laqua-method {\n    display: grid;\n    grid-template-columns: minmax(0, 1fr) 230px;\n    gap: 22px;\n    align-items: center;\n    padding: 18px 0;\n    border-bottom: 1px solid #dddddd;\n  }\n\n  .laqua-method:first-child {\n    border-top: 1px solid #dddddd;\n  }\n\n  .laqua-method-text p {\n    margin: 0;\n  }\n\n  .laqua-method-image {\n    display: flex;\n    justify-content: center;\n    align-items: center;\n  }\n\n  .laqua-method-image img {\n    display: block;\n    width: 100%;\n    max-width: 230px;\n    height: auto;\n  }\n\n  .laqua-table-wrap {\n    width: 100%;\n    overflow-x: auto;\n  }\n\n  .laqua-spec-table {\n    width: 100%;\n    min-width: 620px;\n    border-collapse: collapse;\n  }\n\n  .laqua-spec-table th,\n  .laqua-spec-table td {\n    padding: 10px 12px;\n    border: 1px solid #dddddd;\n    vertical-align: top;\n    line-height: 1.6;\n  }\n\n  .laqua-spec-table th {\n    width: 31%;\n    text-align: left;\n    font-weight: 700;\n    background: #f7f7f7;\n  }\n\n  .laqua-spec-table p {\n    margin: 0 0 5px;\n  }\n\n  .laqua-spec-table p:last-child {\n    margin-bottom: 0;\n  }\n\n  .laqua-footnotes {\n    margin-top: 14px;\n    font-size: 0.92em;\n    line-height: 1.65;\n  }\n\n  .laqua-footnotes p {\n    margin: 0 0 7px;\n  }\n\n  .laqua-technical-notes {\n    margin-top: 28px;\n    border: 1px solid #dddddd;\n    background: #fafafa;\n  }\n\n  .laqua-technical-notes summary {\n    padding: 13px 16px;\n    cursor: pointer;\n    font-weight: 700;\n  }\n\n  .laqua-technical-notes-content {\n    padding: 0 16px 14px;\n  }\n\n  .laqua-technical-notes-content p {\n    margin: 8px 0 0;\n  }\n\n  @media screen and (max-width: 749px) {\n    .laqua-method {\n      grid-template-columns: 1fr;\n      gap: 12px;\n    }\n\n    .laqua-method-image {\n      justify-content: flex-start;\n    }\n\n    .laqua-method-image img {\n      max-width: 100%;\n    }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"laqua-product\"\u003e\n\n  \u003ch2\u003eSUMMARY\u003c\/h2\u003e\n\n  \u003cp\u003e\n    This compact nitrate ion meter measures nitrate ion concentration by\n    applying a small amount of sample, from only 0.3 mL, directly to the flat\n    sensor.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    LAQUAtwin's unique planar ion-selective electrode enables quick and reliable\n    measurement over a wide concentration range in a compact, portable format.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    The general-purpose NO3-11 is useful for soil and crop management, food and\n    agricultural product testing, environmental measurement, and other nitrate\n    analysis applications.\n  \u003c\/p\u003e\n\n\n  \u003ch2\u003eFEATURES\u003c\/h2\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n      Measures nitrate ion concentration from only 0.3 mL of sample\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Measurement possible from 0.05 mL when using Sampling Sheet B\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Flat nitrate ion-selective sensor\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Measures both nitrate ion (NO\u003csub\u003e3\u003c\/sub\u003e\u003csup\u003e−\u003c\/sup\u003e) and\n      nitrate-nitrogen (NO\u003csub\u003e3\u003c\/sub\u003e-N)\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Wide nitrate measurement range from 6 to 9900 ppm (mg\/L)\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Up to two calibration points\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Automatic recognition of the default 150 ppm and 2000 ppm standard solutions\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Low- and high-concentration calibration points can be adjusted\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Multiplication compensation from 0.01 to 9.90\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Concentration, temperature, and mV display modes\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Temperature sensor adjustment function\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Auto Hold function\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Auto Stability function\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Backlit monochrome digital LCD\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Automatic power-off after 30 minutes\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Remaining battery level display\n    \u003c\/li\u003e\n    \u003cli\u003e\n      IP67 water-resistant construction\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Replaceable sensor\n    \u003c\/li\u003e\n    \u003cli\u003e\n      Portable storage case and measurement accessories included\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\n  \u003ch2\u003eVERSATILE SAMPLING METHODS\u003c\/h2\u003e\n\n  \u003cp\u003e\n    LAQUAtwin's flat-sensor design allows samples to be applied or collected in\n    several convenient ways. Choose the method that suits the sample and\n    measurement purpose.\n  \u003c\/p\u003e\n\n  \u003cdiv class=\"laqua-note\"\u003e\n    \u003cstrong\u003eNote:\u003c\/strong\u003e\n    Depending on the sample, preparation such as extraction, dilution,\n    filtration, or the addition of pure water may be required. Use consistent\n    preparation conditions when comparing measurement results.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"laqua-methods\"\u003e\n\n    \u003cdiv class=\"laqua-method\"\u003e\n      \u003cdiv class=\"laqua-method-text\"\u003e\n        \u003ch3\u003eDirect Drop Measurement\u003c\/h3\u003e\n        \u003cp\u003e\n          Apply a liquid sample directly to the flat sensor with a dropper,\n          syringe, or pipette. The NO3-11 requires at least 0.3 mL for direct\n          measurement. Sampling Sheet B allows measurement from as little as\n          0.05 mL.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"laqua-method-image\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/to_drip.webp?v=1784184907\" alt=\"Applying a liquid sample directly to a LAQUAtwin nitrate ion sensor\" loading=\"lazy\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\n    \u003cdiv class=\"laqua-method\"\u003e\n      \u003cdiv class=\"laqua-method-text\"\u003e\n        \u003ch3\u003eImmersion Measurement\u003c\/h3\u003e\n        \u003cp\u003e\n          For liquid samples in a beaker or container, the sensor can be\n          immersed directly in the sample. Open the sliding cap on the sensor\n          guard before measurement.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"laqua-method-image\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Soak.webp?v=1784184907\" alt=\"Immersing a LAQUAtwin nitrate ion sensor directly in a liquid sample\" loading=\"lazy\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\n    \u003cdiv class=\"laqua-method\"\u003e\n      \u003cdiv class=\"laqua-method-text\"\u003e\n        \u003ch3\u003eScoop Sampling\u003c\/h3\u003e\n        \u003cp\u003e\n          The sensor guard can be used to scoop a liquid sample directly from\n          a river, lake, tank, nutrient solution, or other sampling location\n          for convenient on-site measurement.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"laqua-method-image\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Scoop_up.webp?v=1784184907\" alt=\"Scooping a liquid sample directly with a LAQUAtwin nitrate ion meter\" loading=\"lazy\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\n    \u003cdiv class=\"laqua-method\"\u003e\n      \u003cdiv class=\"laqua-method-text\"\u003e\n        \u003ch3\u003eMoist Solid Samples\u003c\/h3\u003e\n        \u003cp\u003e\n          Moist solid samples such as foods or plant materials can be cut into\n          small pieces and placed directly on the flat sensor when sufficient\n          liquid makes contact with the electrode.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"laqua-method-image\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Solid_matter.webp?v=1784184907\" alt=\"Placing a moist sample on a LAQUAtwin nitrate ion sensor\" loading=\"lazy\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\n    \u003cdiv class=\"laqua-method\"\u003e\n      \u003cdiv class=\"laqua-method-text\"\u003e\n        \u003ch3\u003ePowder Samples\u003c\/h3\u003e\n        \u003cp\u003e\n          Place the powder sample on the flat sensor and add a fixed amount of\n          pure water before measurement. Keep the sample amount and water\n          volume consistent when comparing results.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"laqua-method-image\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Powder.webp?v=1784184907\" alt=\"Measuring a powder sample with a LAQUAtwin nitrate ion sensor\" loading=\"lazy\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\n    \u003cdiv class=\"laqua-method\"\u003e\n      \u003cdiv class=\"laqua-method-text\"\u003e\n        \u003ch3\u003ePaper, Textiles, and Sheet-like Samples\u003c\/h3\u003e\n        \u003cp\u003e\n          Cut the sample into small pieces, place them on the flat sensor, and\n          add a fixed amount of pure water to measure nitrate extracted from the\n          material.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"laqua-method-image\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/Sheet-like.webp?v=1784184907\" alt=\"Measuring a sheet-like sample with a LAQUAtwin nitrate ion meter\" loading=\"lazy\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n\n  \u003ch2\u003eSPECIFICATIONS\u003c\/h2\u003e\n\n  \u003cdiv class=\"laqua-table-wrap\"\u003e\n    \u003ctable class=\"laqua-spec-table\"\u003e\n      \u003ctbody\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eModel\u003c\/th\u003e\n          \u003ctd\u003eLAQUAtwin-NO3-11\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eIntended Use\u003c\/th\u003e\n          \u003ctd\u003eGeneral nitrate measurement\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eMeasurement Principle\u003c\/th\u003e\n          \u003ctd\u003eIon-selective electrode method\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eRequired Sample Volume\u003c\/th\u003e\n          \u003ctd\u003e\n            0.3 mL or more\u003cbr\u003e\n            Measurement from 0.05 mL is possible when using Sampling Sheet\n            B\u003csup\u003e*1\u003c\/sup\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eMeasurement Range\u003c\/th\u003e\n          \u003ctd\u003e\n            \u003cp\u003e\n              Nitrate ion (NO\u003csub\u003e3\u003c\/sub\u003e\u003csup\u003e−\u003c\/sup\u003e):\n              6 to 9900 ppm (mg\/L)\n            \u003c\/p\u003e\n            \u003cp\u003e\n              Nitrate-nitrogen (NO\u003csub\u003e3\u003c\/sub\u003e-N):\n              1.4 to 2200 ppm (mg\/L)\n            \u003c\/p\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003e\n            Nitrate Ion Resolution\n          \u003c\/th\u003e\n          \u003ctd\u003e\n            \u003cp\u003e6 to 99 ppm: 1 ppm\u003c\/p\u003e\n            \u003cp\u003e100 to 990 ppm: 10 ppm\u003c\/p\u003e\n            \u003cp\u003e1000 to 9900 ppm: 100 ppm\u003c\/p\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eTemperature Display Range \/ Resolution\u003c\/th\u003e\n          \u003ctd\u003e0 to 50°C \/ 0.1°C\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eCalibration\u003c\/th\u003e\n          \u003ctd\u003e\n            Up to 2 points\u003cbr\u003e\n            Default calibration values: 150 ppm and 2000 ppm\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eAccuracy\u003c\/th\u003e\n          \u003ctd\u003e±10% of the reading\u003csup\u003e*2\u003c\/sup\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eMain Functions\u003c\/th\u003e\n          \u003ctd\u003e\n            \u003cp\u003eAutomatic recognition of 150 ppm and 2000 ppm standard solutions\u003c\/p\u003e\n            \u003cp\u003eAdjustable low- and high-concentration calibration points\u003c\/p\u003e\n            \u003cp\u003eMultiplication compensation: 0.01 to 9.90\u003c\/p\u003e\n            \u003cp\u003eConcentration, temperature, and mV display\u003c\/p\u003e\n            \u003cp\u003eTemperature sensor adjustment function\u003c\/p\u003e\n            \u003cp\u003eAuto Hold\u003c\/p\u003e\n            \u003cp\u003eAuto Stability function\u003c\/p\u003e\n            \u003cp\u003eAutomatic power-off after 30 minutes\u003c\/p\u003e\n            \u003cp\u003eRemaining battery level display\u003c\/p\u003e\n            \u003cp\u003eReplaceable sensor\u003c\/p\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eWater Resistance\u003c\/th\u003e\n          \u003ctd\u003eIP67\u003csup\u003e*3\u003c\/sup\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eDisplay\u003c\/th\u003e\n          \u003ctd\u003eCustom monochrome digital LCD with backlight\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eOperating Environment\u003c\/th\u003e\n          \u003ctd\u003e\n            5 to 40°C, 85% relative humidity or less, non-condensing\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003ePower Supply\u003c\/th\u003e\n          \u003ctd\u003eTwo 3 V CR2032 coin-type lithium batteries\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eBattery Life\u003c\/th\u003e\n          \u003ctd\u003e\n            Approximately 400 hours of continuous use with the backlight\n            switched off\u003csup\u003e*4\u003c\/sup\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eMain Material\u003c\/th\u003e\n          \u003ctd\u003eABS resin\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eDimensions and Weight\u003c\/th\u003e\n          \u003ctd\u003e\n            W164 × H29 × D20 mm, excluding protruding parts\u003cbr\u003e\n            Approximately 50 g, excluding batteries\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eIncluded Accessories\u003c\/th\u003e\n          \u003ctd\u003e\n            \u003cp\u003eS040 nitrate ion sensor\u003c\/p\u003e\n            \u003cp\u003eTwo CR2032 coin-type lithium batteries\u003c\/p\u003e\n            \u003cp\u003eOne dropper\u003c\/p\u003e\n            \u003cp\u003eInstruction manual\u003c\/p\u003e\n            \u003cp\u003eQuick manual\u003c\/p\u003e\n            \u003cp\u003eStorage case\u003c\/p\u003e\n            \u003cp\u003e150 ppm nitrate ion standard solution, 14 mL × 1 bottle\u003c\/p\u003e\n            \u003cp\u003e2000 ppm nitrate ion standard solution, 14 mL × 1 bottle\u003c\/p\u003e\n            \u003cp\u003eSampling Sheet B × 5 sheets\u003c\/p\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eMain Consumables\u003c\/th\u003e\n          \u003ctd\u003e\n            \u003cp\u003eS040: Nitrate ion sensor\u003c\/p\u003e\n            \u003cp\u003eY043: 2000 ppm nitrate ion standard solution\u003c\/p\u003e\n            \u003cp\u003eY045: 150 ppm nitrate ion standard solution\u003c\/p\u003e\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n\n  \u003cdiv class=\"laqua-footnotes\"\u003e\n\n    \u003cp\u003e\n      \u003cstrong\u003e*1\u003c\/strong\u003e\n      Measurement is possible from 0.05 mL when using Sampling Sheet B.\n      Close the light shield cover during measurement. For samples containing\n      fine particles, use a separate sampling-sheet holder cover.\n    \u003c\/p\u003e\n\n    \u003cp\u003e\n      \u003cstrong\u003e*2\u003c\/strong\u003e\n      Indicates agreement between the measured value and the value of a\n      standard solution after two-point calibration using the supplied standard\n      solutions. Standard solution error and rounding error of ±1 digit are not\n      included.\n    \u003c\/p\u003e\n\n    \u003cp\u003e\n      \u003cstrong\u003e*3\u003c\/strong\u003e\n      Equivalent to IP67. The meter will not fail after immersion in water at a\n      depth of 1 m for 30 minutes. It cannot be used underwater.\n    \u003c\/p\u003e\n\n    \u003cp\u003e\n      \u003cstrong\u003e*4\u003c\/strong\u003e\n      Battery life is reduced when the backlight is used. The backlight remains\n      illuminated for approximately 20 seconds.\n    \u003c\/p\u003e\n\n  \u003c\/div\u003e\n\n\n  \u003cdetails class=\"laqua-technical-notes\"\u003e\n    \u003csummary\u003eTechnical Measurement Notes\u003c\/summary\u003e\n\n    \u003cdiv class=\"laqua-technical-notes-content\"\u003e\n      \u003cp\u003e\n        Nitrate-nitrogen (NO\u003csub\u003e3\u003c\/sub\u003e-N) represents the nitrogen component\n        contained in nitrate. It is not a measurement of total nitrogen.\n      \u003c\/p\u003e\n\n      \u003cp\u003e\n        Measurement values may be affected by ions other than nitrate contained\n        in the sample. Iodide, nitrite, bromide, and chloride ions may interfere\n        with nitrate measurement.\n      \u003c\/p\u003e\n\n      \u003cp\u003e\n        Samples containing perchlorate ions\n        (ClO\u003csub\u003e4\u003c\/sub\u003e\u003csup\u003e−\u003c\/sup\u003e) cannot be measured with this sensor.\n      \u003c\/p\u003e\n\n      \u003cp\u003e\n        Oils, fats, high conductivity, and extreme acidity or alkalinity may\n        also affect measurement results.\n      \u003c\/p\u003e\n\n      \u003cp\u003e\n        For quantitative comparisons, keep the sample preparation, dilution or\n        extraction ratio, temperature, calibration procedure, and measurement\n        conditions consistent.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"HORIBA","offers":[{"title":"Default Title","offer_id":44416140181547,"sku":"4540565007008","price":63639.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0572\/7027\/2043\/files\/csm_NO3-11-HORIBA_9d4f0a99bc.webp?v=1784276694"}],"url":"https:\/\/japan-agritrading.com\/collections\/ion-meter.oembed","provider":"Japan Agri Trading","version":"1.0","type":"link"}