ASTM-E259 Historical Revision Information
Standard Practice for Preparation of Pressed Powder White Reflectance Factor Transfer Standards for Hemispherical and Bi-Directional Geometries

ASTM-E259 - 1991(E1) EDITION - SUPERSEDED
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Standard Practice for Preparation of Pressed Powder White Reflectance Factor Transfer Standards for Hemispherical and Bi-Directional Geometries
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Scope

1.1 This practice covers procedures for preparing pressed powder transfer standards of reflectance factor. These standards can be used in the near-ultraviolet, visible and near-infrared region of the spectrum. Procedures for calibrating the reflectance factor of materials on an absolute basis are contained in CIE Publication No. 44 (2). Pressed powder standards are used as transfer standards for such calibrations because they have a high reflectance factor which is nearly constant with wavelength and because the distribution of reflected flux resembles that from the perfect reflecting diffuser.

1.2 This standard does not purport to address all of the safety problems, 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.

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

Keywords

Reflectance and reflectivity-copy materials/paper; preparation of reference white reflectance standards, practice,; Specimen preparation (for testing)-paints/related coatings; reference white reflectance standards, practice

To find similar documents by ASTM Volume:

06.01 (Paint -- Tests for Chemical, Physical, and Optical Properties; Appearance)

To find similar documents by classification:

17.180.20 (Colours and measurement of light)

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Document Number

ASTM-E259-91e1

Revision Level

1991(E1) EDITION

Status

Superseded

Modification Type

Revision with Title Change

Publication Date

Nov. 1, 1992

Document Type

Practice

Page Count

4 pages

Committee Number

E12.02