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- Jun 16, 2014
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Will your sediment and carbon blocks filters( stages prior the membrane), lower your TDS readings? My readings are 130 at water in from softener, then it passes through 2 sediment filters, 5 micron, then 1 micron. then the water passes through 4 carbon blocks 5 micron, 1, 1 and 0.6 micron. After all that my tds is still 130. The membrane removal is 128 tds and the di stages clear the rest. Are these readings normal?