The DR 900 portable multi parameter colorimeter has an IP67 dustproof and waterproof design, making it easy to use under harsh outdoor conditions. Built in 90 measurement programs and customizable collection menu for quick and easy access to your most commonly used measurement programs.

● Municipal sewage
Environmental monitoring
● Water treatment
Industrial process monitoring
● Tap water, drinking water
Boiler water and cooling water
● Education
● Agriculture

The reading modes include concentration,% transmittance, and absorbance.
90 measurement programs are pre-set, and users can create 10 measurement programs themselves.
● You can set up a menu for collecting commonly used measurement programs, which allows you to quickly select the measurement programs you have collected.
The blank adjustment and standard adjustment functions can correct the differences between different batches of reagents.
The data storage capacity is 500, which complies with GLP standards and can be transmitted using a USB interface.
Backlight display function, making it easy to operate the instrument in darker places or under direct sunlight.
● Optional Chinese operation interface, indicator icons can guide users to complete program or menu settings.
● Ergonomic design, easy to operate, IP67 protection level. Excellent anti fall and seismic performance.

light source	LED
detector	Silicon photodiode
wavelength	450,520,560,610nm
Wavelength accuracy	±1nm
spectral bandwidth	15nm
optical system	0/180 º transmittance
Photometric accuracy	± 0.005Abs@1.0ABS nominal
Photometric Linearity	±0.002Abs（0-1 ABS）
Photometric measurement range	0-2 Abs
stray light	＜ 1.0@at 400nm
repetitiveness	±0.005Abs（0-1A）
reading modes	Concentration, absorbance,% transmittance
Prefabricated measurement program	90 items
User built curve function	Yes, up to 10 items
Wavelength selection	auto-select
data storage	500 items (compliant with GLP, including results, time, date, sample ID, and user ID)
Interface language	22 types, including Chinese
operating environment	10-40 ℃, maximum 80% relative humidity (non condensing)
Stored Environment	-30~60 ℃, maximum 80% relative humidity (no condensation)
Protection level	IP67
data interface	Mini USB
display	LCD backlit display
Sample bottle type	25mm round, 16mm round (adapter required)
Battery types	AA battery, 4 cells
battery life	Regular 6 months
size	231×96×48mm
weight	0.6kg

Order Number	description
2722000	Soft edged portable case
4942500	Hard edged portable case
4943000	CEL portable case
2763900	DR/validation absorbance standards (1 set of 4)
2635300	SpecCheck secondary standard Gel DPD chlorine low range
2980500	SpecCheck secondary standard Gel DPD chlorine Medium range
2893300	SpecCheck secondary standard Gel DPD chlorine high range
2712500	SpecCheck secondary standard Gel Fluorine 0.2mg/L
2708000	SpecCheck secondary standard Medium range of gel ozone 0-0.75 mg/L
2507500	SpecCheck secondary standard Gel chloramine and free ammonia

The CEL series portable water quality analysis laboratory is a set developed based on the DR 900 portable multi parameter colorimeter, suitable for various special applications. It is equipped with different reagents and instruments to meet the water quality testing requirements of various outdoor environments, and is also suitable for rapid water quality monitoring of emergencies and measurement of routine water quality parameters in the laboratory.

Item Number	CEL900 series	Types of measurable parameters
2512-31	CEL900 Water Environment Testing Laboratory	Alkalinity, residual chlorine, hardness, total iron, manganese, nitrate PH、 Phosphates, total dissolved solids, temperature, etc
2512-32	CEL900 Environmental Water Quality Testing Laboratory	Acidity, alkalinity, ammonia nitrogen, carbon dioxide, residual chlorine, hardness, total iron, manganese, nitrate, nitrite, phosphate, sulfide, tannin, temperature, turbidity, zinc, etc
2512-33	CEL900 Aquaculture Water Testing Laboratory	Acidity, alkalinity, ammonia nitrogen, carbon dioxide, chloride ions, dissolved oxygen, hardness, iron, nitrate, nitrite PH、 Phosphates, total dissolved solids, temperature, etc
2512-34	CEL900 Basic Drinking Water Testing Laboratory	Alkalinity, aluminum ions, monochloramine, residual chlorine, conductivity, dissolved oxygen, fluoride ions, hardness, total iron, nitrate, nitrite PH、 Phosphates, sulfates, sulfides, temperature, etc
2512-35	CEL900 Advanced Drinking Water Testing Laboratory	Alkalinity, aluminum ions, monochloramine, residual chlorine, chlorine dioxide, chromaticity, conductivity, copper, dissolved oxygen, fluoride ions, hardness, total iron, manganese, nitrate, nitrite PH、 Phosphates, sulfates, sulfides, temperature, etc
2512-36	CEL900 Basic Sewage Testing Laboratory	Aluminum ions, residual chlorine, dissolved oxygen, total iron, nitrate, nitrite PH、 Phosphates, temperature, etc
2512-37	CEL900 Advanced Sewage Testing Laboratory	Aluminum ions, ammonia nitrogen, residual chlorine, chlorine dioxide, total complex, chromaticity, copper, dissolved oxygen, total iron, manganese, nitrate, nitrite PH、 Phosphates, suspended solids, zinc, etc
2512-38	CEL900 Professional Process Water Testing Laboratory	Alkalinity, bacteria, bromine, total chelating masking agent, chloride ions, residual chlorine, chlorine dioxide, chromaticity, conductivity, copper, dissolved oxygen, hardness, total iron, manganese, nitrate PH、 Phosphates, silicates, sulfides, suspended solids, temperature, zinc, etc
2512-39	CEL900 Advanced Portable Laboratory - Reagent/PH/Conductivity	Acidity, alkalinity, ammonia nitrogen, carbon dioxide, chloride ions, residual chlorine, chlorine dioxide, chromaticity, conductivity, copper, dissolved oxygen, hardness, total iron, manganese, nitrate, nitrite pH、 Phosphates, silicates, sulfates, sulfides, suspended solids, temperature, zinc, etc
2512-42	CEL900 Drinking Water Testing Laboratory - Reagents/PH/Microorganisms	Ammonia nitrogen, residual chlorine, total coliforms, Escherichia coli, nitrate, nitrite pH、 Phosphates, silicates, sulfides, conductivity, total dissolved solids, temperature, etc
29940-00	CEL900 Portable Hydraulic Fracturing Water Testing Laboratory	Alkalinity, bacteria, barium, chloride, conductivity, hardness, iron PH、 sulfate