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Significance and Use
5.1 This test method is designed to measure the pH of a chrome tanning solution which has been diluted to a specific concentration. This is considered to be a measure of the acidity or alkalinity of the solution.
5.2 This test method is suitable for quality control in the manufacture of leather.
1.1 This test method covers the determination of the pH of chrome tanning solutions.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D3898 Test Method for Chromic Oxide in Basic Chromium Tanning Liquors
ICS Number Code 59.140.40 (Machines and equipment for leather and fur production)
UNSPSC Code 31221601(Inorganic tanning extracts)
ASTM D5356-10(2015), Standard Test Method for pH of Chrome Tanning Solutions, ASTM International, West Conshohocken, PA, 2015, www.astm.orgBack to Top