1. flogger11

    TDS meter calibration questions, 500/700? EC1 EC2? Help!

    Hey guys, I am totally confused. I understand my TDS meter is testing the electrical conductivity of my water, but I just dont get how it all relates. I know there is a diff on how meter is built, 500 or 700, and that this affects the actual reading I get back from my meter. I am if I got a...
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