dchainy - 14-6-2012 at 05:33
Hey Noobie here and not sure where to put this one.
If the Mod wants to move this thread then by all means go for it. 
I have a Corning model 12 if anyone knows anything or better yet has a manule (and scanner) I could use one.
Anyway I got this meter from a surplus sale. It doesn't want to settle down, nor calibrate. It reads water anywhere from 6 to 8.
Also I made up 2 sols of NaOH both 50mL. 1 in 1 M and the other is .1 M. They both read the same. 1 time it's a 14 and another they're 12.
Oh and the readings are never the same.
Please tell me it's not the probe.
Thanks for any help.
blogfast25 - 14-6-2012 at 07:14
Erm, it's probably the probe.
If your model doesn't date back to the Stone Age, the supplier's website may provide downloadable manuals.