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GE Osmonics GRO-50EN TFM Encapsulated RO Membrane

GE Desal TFM-50EB/EN Reverse Osmosis Membrane 1220536, Encapsulated, PGRO-50EN

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Brand: Pentek
Price: $90.00

Dimensions: 15" x 3"
Weight: 2 lb

In stock

NSF Certified

Pentair GRO-50EN Encapsulated RO Membrane is a 15" x 3" 1:1 HIGH RECOVERY RO membrane with a 50 gallons per day capacity of pure drinking water. Replaces discontinued GE Osmonics TFM-50EB and TFM-50EN membranes. It is encased in a polypropylene housing built with a permeate check-valve, control valve and flow control, that eliminates additional fittings and potential leaks. This RO membrane reduces many pollutants and contaminants such as lead, barium, cadmium, chromium, mercury, nitrate, nitrite, TDS, and more from your water. The membrane will fit many Reverse Osmosis systems that use standard TFM encapsulated membranes between 18 and 100 gallons per minute.* (If your system requires TFM-18EB membrane (which produces 18 gallons per day), this membrane will have identical dimensions and would fit.)

GRO-50EN is a High Recovery, 1:1 model with external flow restrictor included. Older models had 2 versions, GE TFM-50EN membranes come without built-in flow restrictors. TFM-50EB, had built-in restrictors. Consult your RO system manual to see if you need one or already have it. Contact us if you need a restrictor and can't find one.

GE Desal is manufactured with "Membrane-Separation Technology" which employs crossflow filtration where captured impurities on the membrane are constantly swept away by the concentrate stream. Crossflow filtration across the membrane then divides the flow into two outflow streams: the cleansed permeate feed and the concentrate or reject stream. This flow provides continuous cleaning that prolongs membrane life and reducing maintenance costs.

GE and Pentair/Pentek Membranes are the brand of choice for most demanding applications. GE drinking water filters reduce many pollutants and contaminants with a premium membrane process that removes particles 100,000 smaller than human hair. The elements deliver outstanding performance and long-lasting operation.

Key Features & Benefits:

  • Genuine Pentair Membrane.
  • 50 gallons per day capacity.
  • Thin Film Composite Membrane for efficient purification.
  • Cross compatible with other RO filter brands.
  • Included external flow restrictor allows this membrane to work with most system designs.
  • ANSI/NSF 58 listed for materials safety, structural integrity and performance.


Model/SKU:GRO-50EN (current), discontinued: TFM50-EN, GE-RO-TFM50-EB (Alternative: TFM-50EB, TFM-50-CV, 1220536, TFM50EM)
Manufacturer ID:4004424 , 1220536 (discontinued)
Dimensions(inch/es):15 inch L x 3 inch W
Primary Filter Media:Semi-Permeable Membrane(TFM/TFC)
Salt Rejection(%):98 %
Flow Rate(Gallons per Day, gpd):50 gpd *
Operating Pressure(psi):65 psi - 90 psi (4.48 bar - 6.2 bar)
Operating Temperature(°F):77°F - 120°F(25°C - 49°C)
Filter Life(months):24-36 months **
pH Range:4 - 11
Free Chlorine(ppm):0.1 ppm
Core:TFC (Thin Film Composite)
Outer Wrap:Capsule: Polypropylene
Feed/Water Connections: 1/4-inch Quick Connect
* Permeate flow specifications are based on 500 mg/L NaCl solution at 65 psi (4.5 bar) inlet pressure, 77°F (25°C), 15% recovery after 24 hours. Individual element flux may vary ±15%.
** Filters and membrane elements are not to be installed on microbiologically unsafe water supplies. Membrane Elements by GE are not certified to sanitize water, remove cysts, bacteria, or viruses. Filter and membrane element performance can be affected by fluctuations in water quality.

Fits following Brands:
PENTAIR / PENTEK, GE, U.S. Water ( US Water ), Culligan, Ametek, US Filter, American Plumber, Kinetico, Watts and more.

- The Pentair GRO-50EN and GE Desal TFM-50EB / TFM-50EN Membrane is not chlorine resistant. A chlorine taste and odor reduction water filter must be used before the RO membrane if chlorine is present in your water supply.
- This TFM Membrane Element is Tested and Certified by NSF International against NSF/ANSI Standard 58 for performance requirements only.

Tested and Certified

NSF ComponentNSF 58

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