S S scabana Dec 24, 2009 can anyone tell me what i should have my ppm meter set at conversion 0.50 or 0.70 that is for reading ppms in case you are not sure what the hell im talking thank you
can anyone tell me what i should have my ppm meter set at conversion 0.50 or 0.70 that is for reading ppms in case you are not sure what the hell im talking thank you
