1.1 This document 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 should 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, health, and environmental practices and determine
the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance
with internationally recognized principles on standardization
established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations
issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.