Determination of Color and Gloss of samples. 

The color properties of a white or nearly colorless sample are represented by whiteness index (WI) or yellowness index (YI). 

APHA color is a color scale sometimes referred to as a "yellowness index" that is used to assess the quality of liquids that are clear to yellowish in color.

Samples are solid plates, films, pellets, powder and fluids.

• Standard Practice for Computing the Colors of Objects by Using the CIE System (ASTM E 308 )
• Calculating Yellowness and Whiteness Indices from Instrumentally Measured Color Coordinates (ASTM E 313 )
• Standard Test Method for Color Determination of Plastic Pellets (ASTM 6290)
• YI of plastics (ASTM D 1925 )
• Standard Practice for Conditioning Plastics for Testing (ASTM D618)
• APHA color via internal colorimetric method. Color scale along Standard Test Method for Color of Clear Liquids (Platinum-Cobalt Scale) (ASTM D1209)