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How long does your RO membrane last?
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10/26/2007, 12:33 PM
raynist
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Join Date: Apr 2005
Location: Pittsburgh, PA
Posts: 2,272
If you have the 75g filmtec membrane and it is in good working order and you have 300ppm coming out of your tap, you should have about 6-10 ppm after the RO membrane. After DI it should be 0ppm.
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