Ph testing...does this ever happen to you?

[Shadowspop]

This happens to me more often than not and sometimes I feel like I'm giving it my best guess. This is after sitting for several minutes.

 

[jsker]

They usually suggest circulating the water for a better test.

It there a reset with the problem, and how fresh are the batteries

 

[Shadowspop]

The unit is actually fairly new. New batteries, calibrated recently. I'll check for a reset. I definitely swirled it around before letting it settle.

 

[Randy Holmes-Farley]

A good quality pH probe and meter will drift some, but definitely not that much.

 

[redfishbluefish]

Do you keep the probe sitting in water when not in use?

I'd try cleaning the probe by sitting it in vinegar overnight and then rinsing and recalibrating.

 

[Shadowspop]

Do you keep the probe sitting in water when not in use?

I'd try cleaning the probe by sitting it in vinegar overnight and then rinsing and recalibrating.

I'll give that a shot.