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ASTM ISO/ASTM51539-05(2013)

Historical Revision

Standard Guide for Use of Radiation-Sensitive Indicators

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1.1 This guide covers procedures for using radiationsensitive indicators (referred to hereafter as indicators) in radiation processing. These indicators may be labels, papers, inks or packaging materials which undergo a visual change when exposed to ionizing radiation (1-5).2

1.2 The purpose for using indicators is to determine visually whether or not a product has been irradiated, rather than to measure different dose levels.

1.3 Indicators are not dosimeters and shall not be used as a substitute for proper dosimetry. Information about dosimetry systems for radiation processing is provided in other ASTM and ISO/ASTM documents (see ISO/ASTM Guide 51261).

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.


4.1 Indicators may be used to show that products have been exposed to a radiation source. They should be used only to provide a qualitative indication of radiation exposure and may be used to distinguish processed loads that have been irradiated from unirradiated process loads.

NOTE 1—The use of indicators does not eliminate the need for other process-control procedures, such as quantitative dosimetry or the controlled segregation of irradiated from nonirradiated products.

NOTE 2—See ISO/ASTM Standards 51204, 51431, 51608, 51649, 51702, 51939, and 51940 for information on the use of indicators in the various types of processing facilities and for unique product applications.

4.2 The indicator manufacturer is obliged to supply a statement regarding the approximate dose level at which the examiner (20/20 vision), at standard illumination (unfiltered daylight, or artificial light of the spectrum and intensity defined by the proper ASTM standard), is able to determine the visual change in the indicator.

SDO ASTM: ASTM International
Document Number ISO
Publication Date Aug. 8, 2013
Language en - English
Page Count 3
Revision Level 05(2013)
Supercedes
Committee E61.04
Publish Date Document Id Type View
Dec. 1, 2020 E1539-23E01 Revision
Dec. 1, 2020 E1539-23 Revision
Aug. 8, 2013 E1539-05R13 Revision
May 15, 2005 E1539-05 Revision
Jan. 22, 2002 E1539-02 Revision