Hey bro hows your been ? Hope you had a happy holidays I wanted to ask you something. I have a profulix controller supposed to be the best out there. I am having a issue though w/ there conductivity probe. In "There" 50mS calibration fluid it reads 50mS. yet my refractormeter calibrated w/ pinpoint fluid the tank reads 53ms. And the probe reads 57.8 mS. I dont know what to believe. Any way for you to test the fluids out and see if one is wrong ?