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Microprocessor Photo Colorimeter is a compact and easy to operate instrument for Photo Colorimeter analysis of any concentration. The output is available on a 3 digit seven segment red LED display in terms of %Transmission (%T), Absorbance (Abs.). This instrument has the facility for auto zeroing of Absorbance and setting 100% Transmission. The use of microcontroller has made it extremely versatile and state-of-the-art instrument. 10 mm path length matched test tubes are used for sample and blank.

The instrument operates at wavelength between 400 to 700 nm range. The use of high standard wide range glass filters covering 400 to 700 nm in the monochromator gives extremely good results. The filter setting is controlled by a rotating disc having 8 filters. An automatic shutter is provided to stop the light reaching the sensor, when test tube is not inserted in the tube holder. This increases the life of sensor tremendously.



  • Transmission and Absorbance Modes
  • Auto Zeroing Facility
  • Highly Accurate & Stable
  • Range 400 to 700 nm
  • Soft Touch Membrane keys



Wavelength Range

400 - 700 nm


%T: 1, Abs: 0.01

% Transmission

0 - 100


0 - 1.99

Photo Detector

wide range Silicon Photocell


3 Digit Bright Red 7-Segment LED Display


2 Keys, Soft Touch Membrane Keys

Auto Zeroing

Available (for Abs.) and 100 % for %T

Light Sources

6.3 V, 0.3 Amp Tungsten Lamp

Solution Volume

1 ml (Minimum)

Sample System

10 mm path-length matched glass test tube


400, 450, 490, 520, 540, 570, 620, 680 nm filters,
mounted on turret


230 V + 10% AC, 50 Hz


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