DKK-TOA HACH Portable Spectrophotometer DR1900

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A small, lightweight, portable spectrophotometer that uses dedicated reagents to measure a variety of items quickly and easily.

The DR1900 is perfect for use in the field because it is the lightest and most compact portable spectrophotometer. It also can perform that largest number of tests of any portable instrument.

Underneath the rugged exterior, the DR1900 has the largest number--over 220--of the most commonly tested preprogrammed methods already built in. You can also use the easy-to-use interface to create your own methods. Also, it is flexible because you can use the widest range of vial sizes of any other spectrophotometer.


Portability - Easy to hold, and operate, the compact DR1900 is a valuable tool for your field technicians. This is lightest and smallest spec on the market.

Accuracy - Tests are performed with a wavelength range of 340 to 800 nm, which make this a field instrument you can use to find results typically only seen in laboratory instruments.

Ruggedness - The DR1900 is built for rugged conditions. Built as a hand-held spec the DR1900 has a large, clear screen and a simple user interface that makes testing easier than ever in even the most demanding conditions.

  • Compact and lightweight (B5 size, weight 1.5 kg)
  • Can be operated with battery or AC power (optional)
  • Mini USB port for easy data output and software updates (optional)
  • USB connection allows you to easily check saved measurement results on your PC
  • Multi-wavelength absorbance measurement possible
  • A variety of cell adapters are included as standard (4 types of cell adapters)


HACH Product Number DR1900-01H
Measurement Mode Transmittance (%), absorbance (Abs)
concentration(Conc)(based on measurement program)
Measuring method Single wavelength measurement, multi-wavelength measurement
Light source lamp Xenon flash lamp
Wavelength range 340 ~ 800nm
Wavelength Accuracy +/- 2nm
Wavelength resolution 1 nm
Wavelength Calibration Automatic calibration at start-up
Wavelength Selection Automatic selection based on measurement method
Bandwidth 5nm
Absorbance Measurement Range +/-3.0Abs
Accuracy of absorbance measurement 0.0 ~ 0.5Absin3mAbs
0.50-2.0Abs: 1%
Absorbance Linearity <2Abs, <0.5%
>2Abs = 1% (wavelength: 546 nm)
Saving data to the device 500 (Result, Date, Time, Sample ID, User ID)
User configurable 50
Number of Programs
display Graphical display, 240x160 pixels (backlit)
Sample Cell 13mm vial, 16mm vial
10x10mm, 1 inch (25mm)
External Output Possible with optional USB
(USB + power module HACH4206 (LZV813) required separately)
Operating temperature and humidity range 10~40°C
Maximum relative humidity 80% (non-condensing)
Storage temperature and humidity range -30 to 60°C
Maximum relative humidity 80% (non-condensing)
Power supply Standard attachment
4 AA alkaline batteries
Battery life Approximately 200 measurements (when using AA alkaline batteries)
(Backlight not used, power off except during measurement)
External dimensions 178 x 267 x 98 mm
Weight 1.5 kg

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