Can anyone recommend some brand names? Is it better to buy a combo meter or single function? (my expierence{limited} sez to use single function...... What say ye oh denziens of the sub-rosa culture?
I'm using Hanna HI 98130 pH/EC/TDS and it works great. I'd suggest getting a combo pen instead of individual ones. When getting a combo pen, make sure to get the calibrating solution and storage solution.