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Originally Posted by Tangster  All a TDS meter does is read the resistance of Millivolts across the probes and at 45 that is high and if you are saying that 610X10 is high thats shows what needed minerals and elements are dissolved into the water as they create more resistance. Salt Calcium strontium stuff like that .. With your tap water that is really bad it could be metals or other unwanted minerals and elements in that water.. |
Hey Tangster. I always respect your opinions here, and you've helped me out on numerous occasions, but you're incorrect with the above statement.
It's probably 6 of one, half-dozen of the other, but TDS meters don't report on resistance, they report on conductivity. If it were resistance, then murky water, and any water with non-ionic/non conductive particles in suspension would yield a high readout.
The TDS meter is actually inaccurately named. A "Total Dissolved Solids" meter should measure
all TDS; but it doesn't. A TDS meter really only reports on those solids present which contribute to the conduction of electricity (i.e. ions)
I suppose one could argue that since resistance and conductivity are just a different part of the same pie chart; that a TDS meter is giving a reading of resistance. More accurately, however, the readout on a TDS meter is a reflection of how
well the sample water conducts an AC current, not how poorly.
