Use the Evolution-RO1000 RO Replacement membrane when your flow rate decreases or your PPM increases. The RO membrane will remove 98%+ of PPM of Total Disolved Solids.
Replacement Directions: Lube the two small o-rings on the stem of the membrane with silicone lubricant. Discard all water to drain for 1 hour prior to use. Two are needed for Evolution systems.
