1.1 These test methods cover the determination of the compaction density of electrical grade magnesium oxide in heating units.

1.2 Two alternative procedures are described: Test Method A -Water Displacement, and Test Method B -Absorption.

1.3 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.