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ASTM D6342-98

Historical Revision

Standard Practice for Polyurethane Raw Materials: Determining Hydroxyl Number of Polyols by Near Infrared (NIR) Spectroscopy

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1.1 This standard covers a practice for the determination of hydroxyl numbers of polyols using NIR spectroscopy.

1.2 Definitions, terms, and calibration techniques are described. Procedures for selecting samples, and collecting and treating data for developing NIR calibrations are outlined. Criteria for building, evaluating, and validating the NIR calibration model are also described. Finally, the procedure for sample handling, data gathering and evaluation are described.

1.3 The implemenation of this standard requires that the NIR spectrometer has been installed in compliance with the manufacturer's specifications.

1.4 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.

Note 1-There is no equivalent or similar ISO standard.


SDO ASTM: ASTM International
Document Number D6342
Publication Date Nov. 10, 1998
Language en - English
Page Count 8
Revision Level 98
Supercedes
Committee D20.22
Publish Date Document Id Type View
July 1, 2022 D6342-22 Revision
Aug. 1, 2012 D6342-12 Revision
March 1, 2008 D6342-08 Revision
Nov. 10, 1998 D6342-98 Revision
Aug. 1, 2017 D6342-12R17E01 Reaffirmation
Nov. 1, 2003 D6342-98R03 Reaffirmation