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ULTIMATE 5-stage Mechanical filtration Under Sink Water Filtration System

APEC Water ULTIMATE 5-stage Mechanical filtration Under Sink Water Filtration System

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I understand filter replacement time depends on my water quality, but how will I know when to change them?


Dear Kevin, Apec recommends the following filter schedule for RO-90, Filters 1-3 on average every 12 months. Stages 4 & 5 on average every 3-5 years. You can use a TDS meter to test the water quality and to see if the membrane is still removing over 90% of contaminants. Best regards, Apec Customer Support

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