Colour Standards

Colour standards are liquid reference solutions used to calibrate and verify colour measurement instruments and visual comparators. Petroleum, lubricant, chemical and pharmaceutical laboratories use them to report sample colour on a recognised scale.

The 74 Reagecon listings include ASTM colour standards, for example A1 and A3, with values stepping across the ASTM colour scale. Related pharmacopoeial colour solutions appear in the Chinese Pharmacopoeia and United States Pharmacopoeia ranges rather than here.

Choose the scale your test method or specification cites, then the values that span the colour range of your samples, keeping a low and a high point for instrument checks. Lancetech Limited can quote other colour scales or values not currently listed.