Colorimetry

Name:
Colorimetry
Detailed information:
An analytical method based on measuring the color intensity of a substance or a colored derivative of it. For example, the yellow-carotene content of butter is determined by saponifying a sample of butter in an alkaline solution, extracting the carotene with ether, and measuring the intensity of yellow color in the ether extract. Colorimetric methods are used to determine very minute amounts. They are used in hospital laboratories for blood and urine analysis; in food laboratories for determination of vitamins, preservatives, coloring matter, etc.; and in metallurgical laboratories for traces of metals in raw materials and finished products.