The reviews are all over the place but you say you use it with the calibrating solutions?
Is that these ($15)? http://www.amazon.com/dp/B004HE7W42/?tag=skimlinks_replacement-20
Water. I have had too much coffee and junk today.
That would certainly be more economical, but given the frequency of use I'd have to read the fine print to make sure it doesn't lose the pH over time (and end up throwing most of it away.) I currently use these (and the 7.01 pouch)
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