tommy217xxx
Well-Known Member
Hey everyone, I have a bluelabs combo meter and I have to calibrate every time that I use. I was burning plants and I couldn't figure out why until I check the meter with the calibration solution.
When I put the probe in the 7 it usually reads 7.1 and when I check the 4 it's always 4.6. I usually use my meter at least 2 times a week. I do keep the probe in tap water. It the probe starting to go bad?
When I put the probe in the 7 it usually reads 7.1 and when I check the 4 it's always 4.6. I usually use my meter at least 2 times a week. I do keep the probe in tap water. It the probe starting to go bad?