ASTM D6657-14a

1.1 This test method covers the determination of the pH of all types of wet blue and wet white.

1.2 For pH of wet white, the procedure is identical, substitute wet white for wet blue in the standard method.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 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.