Review on Filter under the sink Aquaphor Crystal A, 1/2" white by Gabi Luyska

Does not perform its function, does not filter, does not soften water. A total dissolved solids meter measured tap water, the value was 170 mg/l. (Photo 1) First I bought a basic filter kit k5-k2-k7, the value became 160 mg / l. Better, but very insignificant. The norm is at least less than 50, for comparison, water from a bottle contains 11 mg / l. (Photo 2) Then, after reading the answers, I realized that a softening filter is needed for hard water, I bought a KN filter, installed it instead of k2. . . The device showed 202 mg/l (photo 3).