Область применения

1.1 These test methods cover the chemical analysis of gypsum and gypsum products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster and gypsum concrete.

Note 1—Gypsum reference standard materials, prepared by Domtar, Inc are available through Brammer Standards Company, Inc.

1.2 The test methods appear in the following order:

SectionsAlternative Procedure for Analysis for Calcium Sulfate by Ammonium Acetate Method17-22 Alternative Procedure for Analysis for Sodium Chloride by the Coulometric Method23-29 Complete Procedure5-6Determination of Sand in Set Plaster30-36Optional Procedure for Analysis for Sodium by Flame Photometry47-54Optional Procedure for Analysis for Sodium by the Atomic Absorption Method40-46 Preparation of Sample4Wood-Fiber Content in Wood-Fiber Gypsum Plaster37-39

1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.

1.4 The values stated in SI units are to be regarded as the standard.

1.5 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.