PENTAIR GRO-75 and 2550 ENCAPSULATED membrane

PENTAIR GRO-75 and 2550 ENCAPSULATED membrane

  • $169.00

FITS PENTAIR GRO 75 gpd RO SYSTEMS and 2550 GRO-50 systems

Should be changed every 3-5 years.

Pentair's GRO integrates a 100% dry membrane to help maximize its lifespan and provide enhanced performance to the end-user. The GRO boasts a 50% recovery rate while maintaining a retrofit-able design for easy integration.

Features and Benefits

  • Double the recovery over standard reverse osmosis elements
  • Rejection performance comparable to standard reverse osmosis elements
  • High rejection stability at high input TDS
  • TLC Thin Layer Composite membrane
  • 100% dry membrane maximizing shelf life


  • Maximum Pressure: 125 PSI (6.90 bar)
  • Maximum Temperature: 120°F (49°C)
  • pH: 4-11
  • Free Chlorine: 0.1 ppm


How can you tell it's time to change the Membrane? Two signs that your membrane is failing are these: water production slows down to a trickle or the water has an "off" taste. Generally, under normal use, if your unit is installed on a SOFT water line (as it should be), your membrane will last the full 5 years. If it's hooked into a HARD water line, expect to replace your membrane every couple of years if not sooner. 

This membrane has push-fit connections, you won't need any tools to change it. 

Fits R/O units that look like this:



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