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ASTM E1348-15e1

Historical Revision

Standard Test Method for Transmittance and Color by Spectrophotometry Using Hemispherical Geometry

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1.1 This test method describes the instrumental measurement of the transmission properties and color of object-color specimens by the use of a spectrophotometer or spectrocolorimeter with a hemispherical optical measuring system, such as an integrating sphere.

1.2 This test method is generally suitable for all fully transparent specimens without regard for the specimen position relative to the transmission port of the instrument. Translucent specimens, however, must be placed flush against the transmission port of the sphere.

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

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.


5.1 The most direct and accessible methods for obtaining the color coordinates of object colors are by instrumental measurement using spectrophotometers or colorimeters with either hemispherical or bidirectional optical measuring systems. This test method provides procedures for such measurement by transmittance spectrophotometry using a hemispherical optical measuring system.

5.2 This test method is especially suitable for measurement of the following types of specimens (see also Guide E179 and Practice E805):

5.2.1 Fully transparent specimens (free from turbidity, haze, or translucency), and

5.2.2 Translucent or hazy specimens, provided that the specimen can be placed flush against the transmission port of the integrating sphere.

5.3 This test method is not recommended for measurement of retroreflective transparent or translucent specimens, or samples that are fluorescent.

SDO ASTM: ASTM International
Document Number E1348
Publication Date Nov. 1, 2015
Language en - English
Page Count 3
Revision Level 15e1
Supercedes
Committee E12.02
Publish Date Document Id Type View
Oct. 1, 2022 E1348-22 Revision
Nov. 1, 2015 E1348-15E01 Revision
Nov. 1, 2015 E1348-15 Revision
Nov. 1, 2011 E1348-11 Revision
June 10, 2002 E1348-02 Revision
Jan. 1, 1990 E1348-90 Revision
May 1, 2007 E1348-02R07 Reaffirmation
May 10, 1996 E1348-90R96 Reaffirmation