I got a salt tester that needs be rinsed with deionized water before calibrating it(Tracer brand, if that matters). I can't find deionized water
Does anyone know what else it would be used for or where to start looking for it?
It also needs to be rinsed with distilled water after every use, but I've got gallons of that (my wife has sleep apnea and has to use it in her CPAP machine).
If all else fails, how do I get the d*mned ions out of water?