A TDS meter is useful if not all that accurate with its low resolution
readout.
Check the calibration in the use range.
Even good ones are sometimes 2 digits off between factory calibrated
identical meters, but can be adjusted to be specific use repeatable.
I adjust each one to agree with a COM-100 @ 10 uS
Since there are no dosing standards that make ANY sense and there's
plenty of room to use intuition, *close* is good enough.
Ode
At 12:52 AM 6/18/2008 +0800, you wrote:
Dear James,
We are in general agreement with your position. We
have found the TDS-1 to be of immense value to the
average "do-it-yourselfer" .most especially when utilized for
the lower ppm ranges (5 to 20ppm). While the PWT
unit is superior, we do not deem it worth the extra
cost
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