The Planted Tank Forum - View Single Post - How to calibrate my ph meter?
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post #2 of (permalink) Old 11-24-2012, 04:07 PM
Honeycomb Master
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Join Date: May 2008
Location: Phoenix/Flagstaff, AZ
Posts: 6,726
There should be two places to adjust the high and and low end separately. What type of pH meter is it?

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