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[APD] Re: PH Probe problems

yes. my probe is bad, I confirmed it with someone else who also has the same
ph controller.
mine registers a ph difference of -2

in my case, I suspect heat damage or something. just pure bad luck, it was
sealed in this rubber sleeve. and wasn't opened before (there was a paper
seal around it)

what I would like to find out is whether I can replace the probe with an
ISFET based one, so I won't ever have drying out problems.

anyone knows one online?

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