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The internationally recognized water hardness scale recognizes 4 water hardness classes; from soft, moderately hard, hard, to very hard. By definition, water hardness is the total sum of molar concentrations of calcium ions (Ca 2+) and magnesium ions (Mg 2+).
- PPM to GPG
Water hardness in the US is measured either in ppm (parts...
- PPM to GPG
To use the same hardness scale above, you can simply convert your ppm or mg/L by dividing that number by 17.1 to find the gpg equivalent. So, for example, 130 mg/L or ppm would be 7.6 gpg, which is considered hard water.
The Culligan HE Municipal Water Softeners are tested and certified by WQA against NSF/ANSI Standard 372, CSA B483.1, and NSF/ANSI Standard 44 for the effective reduction of hardness (calcium and magnesium), and NSF/ANSI Standard 42 for the effective reduction of Chlorine Taste and Odor, as verified and substantiated by test data. The Culligan ...
The majority of findings are delivered as a number that reports the concentration of calcium carbonate or other equivalents for a given unit of water. The water hardness scale result may be expressed in parts per million (ppm), grains per gallon (gpg), or milligrams per liter (mg/L).
The Culligan Gold SeriesTM Water Softeners with Soft-Minder® Meter and Aqua-Sensor® sensing device are tested and certified by WQA against 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. nsing device are tested and certified .
According to the Water Quality Association, the hardness scale, measured in gpg of calcium carbonate, can be represented as follows: Less than 1 gpg is considered soft; Between 1 and 3.5 gpg is considered slightly hard; Between 3.5 and 7 gpg is considered moderately hard; Between 7 and 10.5 gpg is considered hard; More than 10.5 gpg is ...
31 Μαΐ 2022 · Your water softener hardness setting should be based on your water supplies water hardness level and its iron concentration, for example a water hardness level of 25 grains per gallon (gpg) and 0.3 parts per million (ppm) of iron would result in a water softener hardness setting of 27.
