minds_I said:I love these-
No issues with bleeding and testing of dark fluids (tea and runoff and fert solutions) is not a problem and does not alter results.
I love these things.
http://www.ph-ion.com/index.asp?PageAction=VIEWCATS&Category=205
minds_I
minds_I said:Yeah, this is true, but you can't measure runoff or murky fluids.