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Hard Water. How to choose a shower filter for hard water? Hardness is the most common problem with water quality. The term "hard" began to be used to describe water after washing with conventional fatty acid-based soaps, after which the...
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Purification of hard water Water hardness is it's characteristic due to the presence of salts in the complex (mainly magnesium and calcium salts). It is measured in milligram-equivalent per liter (mg-eqv/l). The higher the water hardness, the less technical means...
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