I got a new ph meter last week and I’m just not confident in it.
The meter I got is a MH Digital/PH-80.
I was wondering about the probe discoloration and thinking maybe that’s why it seems to float a little bit.
Maybe it’s all in my head and I’m over thinking it to, but it doesn’t seem to hold its calibration.
I calibrate it to 7 with solution, rinse it, test it again it holds. Test my water, ph it and rinse it and put it away. When I retest to see if it held its calibration it tests to 7.2 or 7.3. Maybe it’s not a huge deal, but I figured it would hold a bit longer.
I have 7.0 solution in the storing cap since I didn’t buy storing solution and am out of it at work as well.
Am I over thinking it? Is the probe bad?
Just thought I’d ask to see what you folks thought about it.
Thanks in advance.