Can calibration fluid be stored?

[Dom]

So I have a PinPoint pH probe that I clean and re-calibrate monthly.

I store the calibration fluids in glass vials between calibrations. Do I need to use new calibration fluid each time?

 

[Dragen Fiend]

You should be fine. Going off forum research. You may see minimum fluctuations in the PH calibration. Especially if its sealed. I resealed mine so I guess I'll find out in a few months when I recalibrate lol.

 

[Randy Holmes-Farley Verified Community Expert]

The pH 10 fluid should be protected from air. If not tightly close, CO2 will enter and lower the pH.