1.1 This guide covers minimal criteria which should be met by a micronucleus assay system prior to the development of an ASTM Standard or Guide for the conduct of that assay.

1.2 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.