Colorimetry Meters

Colorimetry is defined as the measurement of a parameter whose concentration is proportional (directly or inversely related) to color intensity after the addition of known volume of reagent(s).

Different chemical substances absorb different and varying visual light frequencies.

Since the absorbance of a substance is proportional to its concentration i.e., a more concentrated solution gives a higher absorbance reading, therefore the concentration of a known solute can be measured using a colorimeter.

Eutech’s latest range of portable waterproof colorimeters measure Chlorine (Free and Total), Cyanuric Acid, pH, Chlorine Dioxide, Bromine and Ozone.

The applications include water analysis in swimming pools, spas, public utilities, industrial wastewater plants, municipal water, treated water, water conditioning systems and paper and pulp mills.

The effectiveness of the disinfectants used depends on your system’s overall water chemistry, and not just on the disinfectants’ concentrations alone.

Model	Meter Highlights	Parameter	Range
Colorimeter C401	Photometric	Chlorine, Free and Total / Cyanuric Acid / pH	0 to 1.99 ppm/ 2.0 to 6.0 ppm/ 5.9 to 8.2 pH
Colorimeter C301	Photometric	Chlorine, Free and Total / pH	0 to 1.99 ppm/ 5.9 to 8.2 pH
Colorimeter C201	Photometric	Chlorine, Free and Total	0 to 1.99 ppm
Colorimeter C105	Photometric	Ozone	0 to 1.39 ppm 1.4 to 4.1 ppm
Colorimeter C104	Photometric	Bromine	0 to 4.49 ppm 4.5 to 13.5 ppm
Colorimeter C103	Photometric	Chlorine Dioxide	0 to 3.79 ppm 3.8 to 11.4 ppm
Colorimeter C102	Photometric	Cyanuric Acid	5 to 90 ppm
Colorimeter C101	Photometric	pH	5.9 to 8.2 pH

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