Quote:
Originally Posted by whatcaneyedo
When was the last time you calibrated your pH probe? After 3 months I find mine can easily be out by .2 When they're out by even more than that I replace them which is probably between 1-2 years. I buy standard probes and not Lab grade and that also shortens their usable lifespan.
|
I calibrated it last month. I will calibrate it again and see.