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silverwolf72
04/13/2007, 12:08 PM
Does 2 point calibration worth the extra money over the single point? I know it's more accurate but do I really need to be? I know a lot of people are always get the best you can but at a certain point you gotta start asking your self is it really necessary to be that accurate.

chinaman4u
04/13/2007, 12:15 PM
I always thought you need two points. One for a 4.0 reference, and the other, 10.0 to adjust the slope of the ph line. Then your readings in between is accurate.