Quote Originally Posted by Weedhound
well i took it to my hydro guy.....and I don't know what he did but he got it calibrated and told me to try it again......don't ask me what I'm doing wrong because it's supposed to be foolproof.....:
How come there's never a fool around when you need one? ...they seem to abound otherwise.

PC :smokin:
PharmaCan Reviewed by PharmaCan on . Rhizome/Opie/Anyone who uses Truncheon PH Meter Help!!! I can't get mine to calibrate lately! I've tried cleaning the probe, and even changing the contact ring (only had it about a month....:() but I keep getting that flashing green 5. It calibrates to the 4.0 solution I have (made by BlueLab) but not the 7 (made by Hanna) although it DID calibrate to the hanna solution previousyly. Any tips? I use new solution each time and check it once a week, keep the cap with 4.0 solution damp on the sponge and rinse the probe each time I use it. HELP!! Rating: 5