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3 hours ago
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Joined: Nov 2007
Posts: 110
Lunker
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Lunker
Joined: Nov 2007
Posts: 110 |
With some research, I see that the formal title of the procedure is "HARDNESS (0 to 4.00 mg/l Ca and Mg as CaCO3". Am I right in that 1 ppm = 1 mg/l? if so, why would a total hardness test only read to 4.00? I hope this doesn't sound too rediculous....
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