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  • ASTM
    E1791-96(2000) Standard Practice for Transfer Standards for Reflectance Factor for Near-Infrared Instruments Using Hemispherical Geometry
    Edition: 2000
    $82.37
    Unlimited Users per year

Description of ASTM-E1791 2000

ASTM E1791-96(2000)

Historical Standard: ASTM E1791-96(2000) Standard Practice for Transfer Standards for Reflectance Factor for Near-Infrared Instruments Using Hemispherical Geometry

SUPERSEDED (see Active link, below)




ASTM E1791

1. Scope

1.1 This practice covers procedures for the preparation and use of acceptable transfer standards for NIR spectrophotometers. Procedures for calibrating the reflectance factor of materials on an absolute basis are contained in CIE Publication No. 44 (9) . Both the pressed powder samples and the sintered PTFE materials are used as transfer standards for such calibrations because they have very stable reflectance factors that are nearly constant with wavelength and because the distribution of flux resembles closely that from the perfect reflecting diffuser.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

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.

ASTM Standards

E131 Terminology Relating to Molecular Spectroscopy

E259 Practice for Preparation of Pressed Powder White Reflectance Factor Transfer Standards for Hemispherical and Bi-Directional Geometries

E284 Terminology of Appearance


Keywords

hemispherical optical measurement system; integrating sphere; materials standards; reflectance and reflectivity; transfer standards; Geometric analysis; Hemispherical geometry; Infrared (IR) analysis--metals/alloys; Integrating sphere reflectometer; Near-infrared analysis/instruments; Reflectance and reflectivity--metals/alloys; Spectralon; Transfer standards;


ICS Code

ICS Number Code 37.020 (Optical equipment)


DOI: 10.1520/E1791-96R00

ASTM International is a member of CrossRef.


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