What is UV-Vis Testing and Why Request It?
UV-Vis analysis is a measurement of color intensity in a solution. Various compounds and elements will react with reagents/chemicals to develop a color in solution that can be measured at a specific wavelength. Generally, the color intensity is proportional to concentration and this concentration can be precisely determined against a set of carefully prepared standard solutions treated with the same chemicals.
Some common substances measured in our laboratories by UV-Vis are formaldehyde and hexavalent chromium.