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Ok I'll do that no problem

Thank you very much for your help I have looked probe and cable not near any power cables probes placed in the same place as my slightly older profilux 4 which read pH at around 8.3-8.4 which was...

Any advice welcome any help??

I've just purchased a new pH probe as my old one was reading 10.50 constant new probe calibrated and was reading 6.98 in the 7solution placed the probe in the sump and it's reading 8.82 salifert test...