Diwrnach
Well-known member
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Good question and I guess the mineral type might make a difference, but in my head (where things are often confused and wrong) ppm is ppm, and those parts have to go "somewhere" and not just vanish?Perhaps it's to with what the solids/minerals are, within the water?A 170 tds in one part of the country could have a completely different content than water with the same tds in another? Would different minerals 'spot' differently than others.........?
No idea though...