ASTM D4890-98
Historical Standard: ASTM D4890-98 Standard Test Methods for Polyurethane Raw Materials Determination of Gardner and APHA Color of Polyols
SUPERSEDED (see Active link, below)
ASTM D4890
1. Scope
1.1 These 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.)
1.2 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Note 1-There is no equivalent ISO standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D883 Terminology Relating to Plastics
D1193 Specification for Reagent Water
D1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
D5386 Test Method for Color of Liquids Using Tristimulus Colorimetry
E308 Practice for Computing the Colors of Objects by Using the CIE System
E1164 Practice for Obtaining Spectrometric Data for Object-Color Evaluation
Keywords
APHA; color; Gardner; platinum-cobalt scale; polyols; polyurethane raw materials; Pt-Co scale;
ICS Code
ICS Number Code 83.040.30 (Auxiliary materials and additives for plast); 83.080.20 (Thermoplastic materials)
DOI: 10.1520/D4890-98
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