Quote:
Originally Posted by Carz
@Ryan Red, I guess pH7 is enough but if I really want to be anal or need to confirm accuracy, I suppose all pH meters should allow slope calibration base on either pH4 or 10.
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hi TS, that depend on prode reading tolerance (+-%).
and also u wont want your tank water below ph4 or abover ph10.
ph meter (aquarium type) dont have or dont need to calibrate ph4 / ph10 i suppose.
