TDS Water Hardness Meter


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TDS means total dissolved solids, on behalf of impurities dissolved in water, the larger the value of TDS, indicating the content of impurities in the water, on the other hand, low impurity content.

The general conversion ratio between GH and TDS value of water hardness:
0-89 ppm (s), strong soft water 0-4 DH;
90-159 ppm, soft 5-8 DH;
160-229 ppm 9-12 DH, moderately hard water;
230-339 ppm, moderate hard 13-18 DH;
340-534 ppm, water 19-30 DH;
More than 535 ppm, strong hard water above 30 DH.