I'm interested in getting a digital Ph tester kit to experiment with leaching the lime from my homemade grout rocks for some wet vivariums and was looking at this one:
Milwaukee PH Tester
Now my question is that it comes with one packet of Ph calibration stuff, does the packet make a whole bottle of stuff and I just dip the tip into the calibration solution and replace the cap? I read something about storing the Ph calibration fluid in the cap so the tip never dries out?
I know some of you are gadget hounds so hopefully you can give me some tips here.