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ASTM D1172-15(2024)

Current Reaffirmation

Standard Guide for pH of Aqueous Solutions of Soaps and Detergents

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1.1 This guide covers the preparation of aqueous solutions of soaps and detergents and the determination of their pH.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


This guide details the standard procedures for the preparation of aqueous solutions of soaps and detergents and the determination of their pH. The required reagent for this procedure is distilled water or its equivalent, and the recommended electrodes for the determination of pH are the Fischer Accuphast combination electrode or Orion Ross Sure Flow electrode or their equivalents.


SDO ASTM: ASTM International
Document Number D1172
Publication Date Jan. 1, 2024
Language en - English
Page Count 2
Revision Level 15(2024)
Supercedes
Committee D12.15
Publish Date Document Id Type View
May 1, 2015 D1172-15 Revision
April 15, 1995 D1172-95 Revision
Jan. 1, 2024 D1172-15R24 Reaffirmation
Oct. 1, 2007 D1172-95R07 Reaffirmation
April 15, 1995 D1172-95R01 Reaffirmation