COLOR GARDNER COLOR: ASTM D1544
EXPLANATION
This test method covers the measurement of the color of transparent liquids by means of comparison with arbitrarily numbered glass standards. It applies to drying oils, varnishes, fatty acids, polymerized fatty acids, and resin solutions.
TEST SUMMARY
A glass tube is filled with sample and under illumination, is compared with glass standards, comparing which standard most closely matches the sample in brightness and saturation.
TEST PRECISION
Repeatability: 0.66 units
Reproducibility: 2.0 units
