So I hooked up my ro/di system in the backyard and started pumping some water out . I got 10 gallons made and I tested the water with a Hannah primo. And it showed 1ppm tds. Is something wrong with my ro/di or is it ok that it's 1ppm tds?
When you dipped it, did it have the right reading? Dipping it doesn't calibrate it, you have to set the level yourself by turning the calibration screw. It's usually located on the back of the meter, in a small hole. It should be labeled
You calibrate tds with a NaCl solution. They are calibrated from the factory but don't stay that way. I honestly haven't done it to mine yet but it says it in the instructions