Color values represent the quantitative measurements related to a sample's interaction with light. Specifically, when dealing with liquid samples, color values refer to the intensity of the color of a particular sample as measured by a spectrophotometer.
Spectrophotometers work by measuring the amount of light that is absorbed or transmitted by a sample across different wavelengths of light. The results of these measurements can be expressed as color values, such as absorbance or transmittance values. These values can be used to determine the concentration of a substance present in a sample because different substances absorb and transmit light at various wavelengths.By comparing the color values of a sample to those of known standards or controls, researchers can accurately determine the composition of a substance in the sample.