These test methods are used to determine the basicity of leather when used in accordance with Test Method D4654.

1.1 These test methods are intended for use in determining the total, neutral, and combined acid sulfate in mineral-tanned leather.

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.