Photo Colorimeters

Photo Colorimeters

A Photo Colorimeter is a device used to measure the absorbance of specific wavelengths of light by a liquid sample. It is commonly used in laboratories for biochemical analysis, water quality testing, and industrial applications.

Working Principle:

• The colorimeter passes light of a specific wavelength through a sample.
• The light is absorbed by the sample, and the remaining light is detected by a photocell.
• The instrument then measures the absorbance or transmittance of the sample, indicating the concentration of a substance in solution.

Types of Photo Colorimeters:

1. Analog Photo Colorimeters: Manual operation with analog dials.
2. Digital Photo Colorimeters: Provides digital readings for higher accuracy.
3. Microprocessor-based Photo Colorimeters: Offers precise, automated measurements with data storage capability.

Key Features:

• Wavelength Range: Typically from 400 nm to 700 nm.
• Light Source: LED or tungsten lamp for consistent illumination.
• Sample Holders: Accepts test tubes or cuvettes.
• Display: Analog dial or digital screen for readings.
• User-friendly Interface: Simple calibration and measurement process.