Densitometer

A densitometer is a device for measuring the optical density (densitometry) of substances. It is used to quantify the concentration of a substance in a solution by measuring the amount of light absorbed by that solution.

The operating principle of the densitometer is based on the Bouguer-Lambert-Beer law, according to which the optical density of a solution is directly proportional to the concentration of the dissolved substance. The densitometer consists of a light source, a cuvette for a solution and a photodetector. A beam of light passes through the solution and is absorbed by it depending on the concentration of the substance. The photodetector measures the intensity of transmitted light.

Densitometers are widely used in biochemistry, molecular biology, and clinical diagnostics to determine the concentration of proteins, nucleic acids and other substances. Modern densitometers allow measurements with high accuracy and sensitivity.

**Densitometer** is a device that analyzes the optical properties of a medium and determines its relative density. The purpose of the equipment is to control the effectiveness of coloring pigments or powders. In the professional sphere, the use of the device helps monitor air quality in establishments, and also detects the content of certain substances in food products.