This RO replacement membrane by Hydrologic filters 75 gallons per day and lowers 98% PPM of total dissolved solids. It is important to change the reverse osmosis membrane every 24 months to ensure water quality stays high. When the PPM increases and water flow decreases, it signifies that it’s time to replace your RO membrane. 

Specifications:

• SKU/Model No.: HF-HL22074

• Weight: 0.55 lbs

• Dimensions: 0.02 × 14 × 2 inches

• Brand: Hydrologic