The Culligan Gold Series™ Water Softeners with Soft-Minder® Meter and Aqua- Sensor® sensing device are tested and certified by WQA against NSF/ ANSI 372, CSA B483.1, and NSF/ANSI Standard 44 for the effective reduction of hardness (calcium and magnesium), barium and radium 226/228 as verified and substantiated by test data. The Culligan ...