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That makes a lot of sense. Thanks!pH is much cruder since it is a logarithmic scale ( a 0.3 pH unit difference is a doubling of potency) and a meter calibrated at pH 7 and 10 will not be especially accurate at pH 12.5.
Potency is linear with conductivity, and is easily read at 5-10 mS/cm (50-100% potency) with an appropriate meter.