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Significance and Use
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).
1.3 This standard does not purport to address all of the safety concerns, 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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
D6166 Test Method for Color of Pine Chemicals and Related Products (Instrumental Determination of Gardner Color)
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E308 Practice for Computing the Colors of Objects by Using the CIE System
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E1164 Practice for Obtaining Spectrometric Data for Object-Color Evaluation
ISO StandardsISO 4630-1 Clear Liquids--Estimation of Colour by the Gardner Colour Scale--Part 1: Visual Method ISO 4630-2 Clear Liquids--Estimation of Colour by the Gardner Colour Scale--Part 2: Spectroscopic Method ISO 6271-1 Clear Liquids--Estimation of Color by the Platinum-Cobalt Scale--Part 1: Visual Method ISO 6271-2 Clear Liquids--Estimation of Color by the Platinum-Cobalt Scale--Part 2: Spectroscopic Method
ICS Number Code 83.040.30 (Auxiliary materials and additives for plastics); 83.080.20 (Thermoplastic materials)
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ASTM D4890-13, Standard Test Methods for Polyurethane Raw Materials: Determination of Gardner and APHA Color of Polyols, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top