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ASTM E1135-97

Historical Revision

Standard Test Method for Comparing the Brightness of Fluorescent Penetrants

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1.1 This test method describes the techniques for comparing the brightness of the penetrants used in the fluorescent dye penetrant process. This comparison is performed under controlled conditions which eliminate most of the variables present in actual penetrant examination. Thus, the brightness factor is isolated and is measured independently of the other factors which affect the performance of a penetrant system.

1.2 The brightness of a penetrant indication is dependent on the developer with which it is used. This test method however, measures the brightness of a penetrant on a convenient filter paper substrate which serves as a substitute for the developer.

1.3 The brightness measurement obtained is color-corrected to approximate the color response of the average human eye. Since most examination is done by human eyes, this number has more practical value than a measurement in units of energy emitted. Also, the comparisons are expressed as a percentage of some chosen standard penetrant because no absolute system of measurement exists at this time.

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.


SDO ASTM: ASTM International
Document Number E1135
Publication Date Feb. 10, 1997
Language en - English
Page Count 5
Revision Level 97
Supercedes
Committee E07.03
Publish Date Document Id Type View
Feb. 1, 2019 E1135-19 Revision
June 15, 2012 E1135-12 Revision
Feb. 10, 1997 E1135-97 Revision
Feb. 1, 2024 E1135-19R24 Reaffirmation
July 1, 2008 E1135-97R08E01 Reaffirmation
July 10, 2003 E1135-97R03 Reaffirmation