Originally Posted by Big Tex
How do you calibrate it?
With those you can use rodi
water and calibrate to zero or use the calibration fluid and calibrate to 36. All you have to do is take the dropper and drop some ro
water on the glass close it and look through it if its not at zero you take the screw driver and turn the screw till you hit zero. With the calibration fluid you drop some on the glass wait a few seconds look and it should be at 36 1.026 and your done. Take the dropper take some of your tank water drop in glass that's your salt level.