User24 Well-Known Member May 14, 2008 #2 Hanna works for me. I have the second one down, but mine is black. It does ph, ppm, and ms/cm(EC) Hanna Instruments - HI991301
Hanna works for me. I have the second one down, but mine is black. It does ph, ppm, and ms/cm(EC) Hanna Instruments - HI991301
