Endress+Hauser’s Liquiline System CA80HA hardness analyzer provides online analysis for hardness in process water. It helps optimize the control of water softening processes such as ion exchange or reverse osmosis, ensures quality of products influenced by water hardness and analyzes boiler feedwater. The colorimetric analyzer uses the phthalein purple method and measures calcium carbonate over a range of 0 to 80 mg/l with accuracy of ±0.5 mg/l.