Skip to main content

APHA color calculation

The APHA color analysis, also known as Hazen scale, and often found in literature as the Platinum/Cobalt (Pt/Co) scale, is a color standard test method. There is a linear correlation between Yellowness index and Pt/Co scale.

Colorimetric Analysis Result​

The colorimetric report is enhanced by the two calculations:

  • Hazen/APHA Color (Area Calculation)

  • Hazen/APHA Color (Yellowness Index Calculation)