I would clean it with vinegar, then rinse in fresh watter, then re calibrate it. check the calibration again in a day or two.
hint*** when calibrating a probe, have a glass of ro/di handy to rinse the probe every time you change solutions salt water > 7.0 > 10.0 each can contaminate the other making your calibration less accurate
__________________
A free people ought not only to be armed and disciplined but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them G.Washington
|