Jibblerjoe
New member
Does the calibration solution temp need to be exact?
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Temperature of calibration solution?
- Thread starter Jibblerjoe
- Start date
Royal Nugs
New member
I believe ph pens that don't compensate for temperature should have solution in the 75-78 degree range. Which pen you got?
Jibblerjoe
New member
The 1 gwe recommended. That cheap yellow one.