ASTM-D1172 › Standard Guide for pH of Aqueous Solutions of Soaps and Detergents
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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.
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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 and health 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.
ICS Number Code 71.100.40 (Surface active agents)
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July 1, 2015