Quote:
Originally Posted by kengeroo
So I am pulling my hair out
my new apex ph probe is reading 7.91
while my seneye is reading 8.12
hagen ph hest kit 8.3
api test kit reads 8.2
I have calibrated the apex with pinpoint 10, 7 calibration fluid,, twice ...
any suggestions ?
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First suggestion: Throw out the Hagen and API kits and remove them from the equation. A pH test kit is fairly useless if you want to get within 2 points. Considering you calibrated the Apex probe, I'd be inclined to believe that the most. I'm not sure how Seneye usually compares.
I agree with e46er, you're within range, so I wouldn't be too concerned.