ASTM D 4458 : 2015 : R2023

1.1This test method2 is applicable to the measurement of chloride in highly mineralized waters such as oil field brines, seawater, and brackish water. The test method is based upon the titration of chloride with silver nitrate, using a visual indicator.

1.2Samples containing from 10 mg to 150 mg of chloride can be analyzed by this test method. These levels are achieved by dilution as described in the test method.

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

1.4It is the user's responsibility to assure the validity of the method for untested types of water.

1.5This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.