This test method provides procedures for sampling and analysis of aggregate for water-extractable chloride using a Soxhlet extractor. NOTE 1—This test method is to be used when significantly high chloride content has been found in aggregates, concretes, or mortars. The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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.