Ro need new membrane

Johnwindow1987 said:

Hi everyone need a bit of help I replaced pre filters and resin today. My TDS from my tap is 120ppm after membrane I’m getting 25ppm then 0ppm after resin. Is this ok or dose the membrane need changing?? Running a 80psi boost pump aswell thanks for any help cheers 

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spruce said:

No, your tds after your membrane should be around 3ppm. Your membrane is working at 79% efficiency.

Whats you waste to pure ratio when you are producing water?

With 120ppm you should be fractional over 1 waste to fractional under 1 pure - 55% waste to 45% pure, perhaps 60% waste to 40% pure.

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