



Hach DR900 Robust portable datalogging colorimeter
DR900 Robust portable datalogging colorimeter
Robust outdoor portable Colorimeter
Portable and robust, micro-processor-controlled colorimeter with power-saving LED technology. Pre-programmed with 90 Hach Methods.
The handheld colorimeter allows for quick and easy access to your most frequently used testing methods in less than four clicks. This colorimeter is waterproof, dustproof, shock resistant, and has been drop tested for greater quality assurance.
This instrument comes with an intuitive user interface, a large data storage and a built-in USB port for the easy transfer of information. The portable colorimeter also helps satisfying core testing needs by offering at least 90 of the most common testing parameters.
Combining all these features with a push button backlit display for use in low light areas, you have a portable colorimeter which is field-ready, and makes testing in harsh field environments a little less challenging.
Benefits
Rugged construction
Dustproof, waterproof, shockproof
Designed for use in the field
True handheld analysis for use anywhere
Easy to use
Menu driven, step-by-step analysis
Reliable results without a main connection
Improved user interface allowing quick selection of tests
Configured for immediate use
Pre-programmed, ready to use "out of the box"
Specifications
Environmental conditions
relative humidity | Max. 90 % relative humidity (non-condensing) |
temperature | 10 - 40 °C |
Technical Attributes
Battery life | 6 months (typical) at 5 readings a day / 5 day week without backlight (backlight usage will decrease battery life) |
Battery requirements | 4 AA size batteries |
Cuvette compatibility | 1 inch round / 16 mm round (with adapter) |
Detector | Silicon photodiode |
Dimensions (H x W x D) | 231 mm x 96 mm x 48 mm |
Display | Graphical display 240 x 160 pixel (Backlit) |
Enclosure waterproof rating | IP67 |
Interface | USB type Mini IP67 |
Manual languages | English, French, German, Italian, Spanish, Portuguese, Bulgarian, Chinese, Czech, Danish, Dutch, Finnish, Greek, Hungarian, Japanese, Korean, Polish, Romanian, Russian, Slovenian, Swedish, Turkish |
Operating conditions | 10 - 40 °C (50 - 104 °F), max. 80 % relative humidity (non- condensing) |
Operating mode | Transmittance (%), Absorbance and Concentration |
Optical system | 0 / 180 ° transmittance |
Photometric accuracy | ± 0.03 Abs |
Photometric linearity | ± 0.002 Abs (0 - 1 Abs) |
Photometric measuring range | 0 - 2 Abs |
Reproducibility | ± 0.005 Abs (0 - 1 A) |
Source lamp | Light Emitting Diode (LED) |
Spectral Bandwidth | 15 nm filter bandwidth |
Storage conditions | -30 - 60 °C (-30 - 140 °F), max. 80 % relative humidity (non-condensing) |
Stray light | < 1.0 % at 400 nm |
Supported chemistry | Hach tests |
Temperature range | 0 - 50 °C |
User interface | English, French, German, Italian, Spanish, Portuguese, Bulgarian, Chinese, Czech, Danish, Dutch, Finnish, Greek, Hungarian, Japanese, Korean, Polish, Romanian, Russian, Slovenian, Swedish, Turkish |
User programmes | 10 |
Warranty | 24 months |
Wavelength accuracy | ± 1 nm |
Wavelength range | 420, 520, 560, 610 nm |
Wavelength selection | Automatic |
Weight | 0.6 kg with battery |
What's included? | Includes: DR900 instrument, USB cable with mini-USB connector, 4-AA alkaline batteries, 2 glass sample cells 1-inch (25 mm) round with 10, 20, 25-mL marks, 2 sample cells 1 cm/10 mL, sample cell adapter and multilingual user manual |

Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.