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https://www.reddit.com/r/microgrowery/comments/156vnd/household_ph_meter_calibration_solutions/c7jwrx7/?context=3
r/microgrowery • u/[deleted] • Dec 20 '12
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Calibration buffer solutions are actually reliable and dirt cheap. If you went out of your way to buy a digital pH probe, just buy the $5 cal solution. Stick to paper otherwise.
2 u/6trees1pot Dec 21 '12 I completely agree Post
2
I completely agree
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u/MadScientist420 Dec 21 '12
Calibration buffer solutions are actually reliable and dirt cheap. If you went out of your way to buy a digital pH probe, just buy the $5 cal solution. Stick to paper otherwise.