ASTM International

Standard Practice for Polyurethane Raw Materials: Determining Hydroxyl Number of Polyols by Near Infrared (NIR) Spectroscopy
 N D6342

Annotation

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

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.

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

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

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—This standard is equivalent ISO 15063.

*A Summary of Changes section appears at the end of this standard

Автоматический перевод:

Общепринятая практика для сырья полиуретана: определение гидроксильного числа полиолов близкой инфракрасной спектроскопией (NIR)