ISO 9297:1989

Water quality — Determination of chloride — Silver nitrate titration with chromate indicator (Mohr’s method)

The method specified is applicable to the direct determination of dissolved chloride in concentrations between 5 mg/l and 150 mg/l. The working range may be extended to 400 mg/l by using a burette of larger capacity or by sample dilution. Due to many interferences the method is not applicable to heavily polluted waters of low chloride content.