Historical
ASTM D2448-85(1996)e1
Standard Test Method for Water-Soluble Salts in Pigments by Measuring the Specific Resistance of the Leachate of the Pigment
This test method covers the determination of the specific resistance of the aqueous leachate from a pigment as an index of water-soluble salt content. The method is applicable to white pigments and colored pigments (organic and inorganic). The water-soluble salts content is a function of the specific resistance of the solution formed by extracting the pigment with water. 1.2 This test method is based on a water to pigment ratio of 9+1. The leachate yield (min 160 mL) sufficient for rinsing the cylinder dip cell and thermometer plus the minimum 80 mL required for the measurement determine the quantity of pigment to be used. 1.3 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.###
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