heckler73
Well-Known Member
That seems a little buggered. But these devices are not military grade. You can expect deviations of +/- 0.1, so those numbers don't seem out of reason (at least for my meter)This Solution Cleans The pH Electrode.As Soon As Some More Money Rolls In I Will Be Switching All My Meters Solutions Over To Hanna.Ive Read where Hanna Meters Need To Be Clean Stored And Calibrated With Hanna Solutions To Get The Best Resluts.Im Currently Using GH pH Calibration Solutions And after Calibrating My 4.01 Solution Reads 3.84 And My 7.01 Reads 7.13???
I have an old Hanna (just pH), but I recently got a new Cheapo Chinese (looks like a Milwaukee) and calibrated it with Blue Labs 7 and 4. I've been finding I get weird readings, too (mostly due to slow response). I'll put the meter in a glass of tap water (pH 7.1) and then when I dip it in my mix, and go back to the water (after rinse), it usually reads low, but then it adjusts after a minute or so.
I'd like to get my Hanna back in operation so that's why I was wondering what the cleaning solution was.
I don't know why you'd NEED to use the Hanna solutions to calibrate, unless they were sneaky and made their self-calibration to operate at different pH levels (under the guise of being 7.0 and 4.0). I used to calibrate mine with whatever the local hydro shop had (they made their own solutions). I never had any problems...
Now that I think of it, doesn't someone use 6.83pH for calibration?
But I wonder about the bulb on mine. It is OLD, and I figured it would be useless after time (even though it's been stored properly).
How old is your meter now? It looks pretty beat up from what I remember (the black one, no?). Kind of like your scale!