ASTM D4654-87 (2020) pdf free

04-12-2021 comment

ASTM D4654-87 (2020) pdf free.Standard Test Method for Sulfate Basicity in Leather.
This test method is intended for use in calculating thesulfate basicity of mineral tanned leather.
This standard does not purport to address all of thesafety concerns,if any, associated with its use. It is theresponsibility of the user of this standard to establish appropriate safety,health, and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.3 This international standard was developed in accordance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of lnternational Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.This standard is issued under the fixed designation D4654; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.Asuperscript epsilon (s) indicates an editorial change since the last revision or reapproval.
Unless otherwise specified in the detail specifications,two specimens from the composite sample shall be tested.5.3 The percent basicity of the sample for test shall be theaverage of the test results obtained from the specimens tested.6. Procedure
The chromic oxide shall be determined as described inTest Method D2807.The combined sulfate shall be determinedas described in Method D4655.Express the percent basicity of the specimen accordingto Schorlemmer’s system.ASTM D4654 pdf download.

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