I was all prepped to use RO/DI to calibrate my refractometer. The directions, however, indicate to use distilled water. What do you guys use to calibrate your refractometers, and do you pay attention to the temperature of the calibration fluid?
I use distilled water to calibrate my refractometer, and I try and keep the distilled @ room temp. I calibrate this every 2 months.
My ph monitors I calibrate at the same time to save on calibration fluid!
I calibrated my TDS meter when I first got it. The directions which came with the meter stated the meter only needed to be calibrated after every battery change. I havent needed to change the batteries yet so it has only been calibrated just the once.