I think i need to calibrate my hm tds meter for my ro/di. New pack of dion resin is reading 005ppm, so it must be out.
Can someone tell me how many g of salt in how much water? Here is what they say:
http://www.tdsmeter.com/calibration_maintenance.html
Can someone tell me how many g of salt in how much water? Here is what they say:
http://www.tdsmeter.com/calibration_maintenance.html