Calibrating PH probe

[stebec]

For some reason my Ph probe will not re calibrate, I am using new calibration fluid which was floating in my sump for over an hour to bring up to temperature, the progress bar will not go above 25%

Steve

[Vinny]

Hi Steve,

How old is this probe?

[stebec]

Hi Vinny

Its about 12 months old

[Vinny]

It should be replaced if calibration is no longer possible.

[stebec]

Thanks Vinny

I will buy a new probe