New Neptune Lab Grade PH Probe All Over The Place?

[Pwnm30rdi3]

Readings on the probe were good for about 4 days. This evening they seem to be all over the place. Haven't had this issue before with a PH probe.
Any recommendations? Return?

 

[Quietman]

Check that connections are clean and solid. Try to calibrate again. My two probe failures were solid readings but way off the chart. This looks like bad connection/wiring...but not the Apex probe expert.

After that I'd log a support request. Might take a day or two to get an appt but they were great to work with once got connected.

 

[dwest]

pH probes should have instructions to recalibrate after a week.

 

[schuby]

If you moved your wiring around, you may have put a probe cable on or under a power cable. Power cables can cause interference.

 

[Pwnm30rdi3]

I recalibrated this evening and I seem to have more stable results. I also double checked all wiring and made sure power cables were distanced. Thanks for the tips all!
If I run into more troubles, I'll keep this post updated.