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ASTM D4890-24

Current Revision

Standard Test Methods for Polyurethane Raw Materials: Determination of Gardner and APHA Color of Polyols

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1.1 These test methods visually measure the color of clear polyester and polyether liquid polyols. They apply only to materials whose colors have light-absorption characteristics similar to those of the standards. An additional Platinum-Cobalt color method is outlined in Test Method D1209 (see Note 1).

1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

Note 1: Test Method A of this standard is equivalent to ISO 6271-1. Test Method B of this standard is equivalent to ISO 4630-1.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


5.1 These test methods are suitable for quality control, as specification tests, and for research. Color is an important property of urethane products.

SDO ASTM: ASTM International
Document Number D4890
Publication Date Aug. 1, 2024
Language en - English
Page Count 5
Revision Level 24
Supercedes
Committee D20.22
Publish Date Document Id Type View
Aug. 1, 2024 D4890-24 Revision
Aug. 1, 2018 D4890-18 Revision
April 1, 2013 D4890-13 Revision
Sept. 1, 2006 D4890-06 Revision
July 10, 1998 D4890-98 Revision
Nov. 1, 2003 D4890-98R03 Reaffirmation