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ASTM D542-22

Current Revision

Standard Test Method for Index of Refraction of Transparent Organic Plastics

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1.1 This test method covers a procedure for measuring the index of refraction of transparent organic plastic materials.

1.2 A refractometer method is presented. This procedure will satisfactorily cover the range of refractive indices found for such materials. Refractive index measurements require optically homogeneous specimens of uniform refractive index.

Note 1: This test method and ISO 489 are technically equivalent.

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.

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.


4.1 This test method measures a fundamental property of matter which is useful for the control of purity and composition for simple identification purposes, and for optical parts design. This test method is capable of readability to four figures to the right of the decimal point.

SDO ASTM: ASTM International
Document Number D542
Publication Date Sept. 1, 2022
Language en - English
Page Count 4
Revision Level 22
Supercedes
Committee D20.40
Publish Date Document Id Type View
Sept. 1, 2022 D0542-22 Revision
March 1, 2014 D0542-14 Revision
Sept. 1, 2013 D0542-13 Revision
Nov. 10, 2000 D0542-00 Revision
Sept. 1, 2006 D0542-00R06 Reaffirmation