1.1 This specification covers two grades of solid caustic potash, 85 % and 90 %.

1.2 The following safety hazards caveat pertains only to the test methods portion, Section 6, described in this specification: 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.

1.3 Review the current Materials Safety Data Sheets (MSDS) for detailed information information comcerning toxicity, first aid procedures, handling and safety precautions.