ASTM D 4890 : 2013
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Standard Test Methods for Polyurethane Raw Materials: Determination of Gardner and APHA Color of Polyols
Hardcopy , PDF
23-08-2023
English
01-04-2013
1.1These test methods measure visually the color of clear polyester and polyether liquids. They apply only to materials whose colors have light-absorption characteristics similar to those of the standards. An alternative method is Test Method D1209 (see Note 1).
1.2Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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