I understand that TDS stands for total disolved solids which would be impurities in the water. With a reading of 0ppm is there anything at all in the water? Can there be any phoshates or anything else still in the water at 0ppm? I do not know how accurate my TDS meter is, but I do get 122ppm at faucet and only 1ppm after RODI. I'm sure 1ppm has some phosphate or other undesirable in it, but is it really a problem. At 1ppm tds I would assume that phosphates might not show up on ordinary test kits, Am I wrong?
Taz
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