noun
color comparison; colorimetry
Technical term used in chemistry, biology, and color science for comparing or measuring colors, often with instruments or standard charts.
比色分析は溶液の濃度を測るのに使われる。
Colorimetric analysis is used to measure the concentration of a solution.
この試験紙は比色表と比べて結果を読み取る。
This test strip is read by comparing it with a color chart.