ASTM D1544 – Standard Test Method for Color of Transparent Liquids (Gardner Color Scale)
Significance and Use
3.1 This test method applies to drying oils, varnishes, fatty acids, polymerized fatty acids, and resin solutions. Its application to other materials has not been tested.
1.1 This test method covers the measurement of the color of transparent liquids by means of comparison with arbitrarily numbered glass standards.
1.2 Users of this method should have normal color vision.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.