2.5" x 21" | 325 GPD Commercial Reverse Osmosis RO Membrane | Applied Membranes

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2.5" x 21"  Reverse Osmosis Membrane | Tap or Brackish Water | 325 GPD RO Membrane

AMI commercial RO membrane elements produce high quality water from tap or brackish water in commercial reverse osmosis systems, and are among the finest in the industry.  With hundreds of thousands of membranes in operation in water filtration systems world-wide, AMI membranes have earned a reputation of delivering consistent, reliable, and long lasting  performance, making AMI Membranes the natural choice for use in commercial RO systems.  AMI Commercial RO Membranes are constructed of tap water TFC (thin film composite) membrane material and fit industry-standard PVC and Stainless Steel RO Membrane Housings. 

AMI Membranes are Made in the USA in their ISO 9001:2015 Certified Facility and are 100% Quality and Performance Tested.

Genuine AMI Membranes ISO USA Quality


Specifications for M-T2521A

AMI Part Number: M-T2521A
Membrane Size (Nominal): 2.5 x 21
Membrane Dimensions: 2.5"Dia. x 21"L
Flow Rate: 325 GPD (1,230 LPD)
Applied Pressure: 225 psi (1.6 MPa)
Stabilized Salt Rejection: 99.5%
For Housing: Standard 2.5" x 21"
Outer Wrap: Tape Wrapped
Membrane Type: Tap or Brackish Water
Membrane Sheet: TFC (Thin Film Composite)
Element Type: Spiral Wound
Feed Water Test Temperature: 77°F  (25°C)
Single Element Recovery: 8%
Chlorine Tolerance: 0
Feed water pH Range: 2-11
For Housing: 2.5" x 21"
Can Replace:

DuPont Dow FilmTec TW30-2521, 80641
GE Desal AG2521TM
GE Desal AG2521TF
GE Desal 1206719
Manufacturer: Applied Membranes, Inc.
Country of Manufacture: United States (USA)

AMI Membranes Product Specifications

Note: Performance specifications based on 2,000 mg/l sodium chloride, 225 psi (1.6 MPa) applied pressure, 77ºF (25ºC) feed water temperature, pH 8 and the recovery listed in the table above. Element permeate flow may vary ± 20%.

Features of AMI Tap Water / Brackish Water RO Membranes

  • High Rejection & Flow Rate
  • Made in the USA
  • Manufactured in our ISO 9001:2015 Certified Facilities
  • 100% Performance and Quality Tested
  • Backed by our Experienced Technical Support Staff
  • High Quality for Consistent and Reliable Performance
  • Uses the most advanced membrane film technology and manufacturing processes
  • Standard dimensions to fit in commonly available housings

Applications for AMI Commercial RO Membranes

  • Restaurants
  • Aquariums
  • Whole House (Residential)
  • Office
  • Institutions
  • Hotels
  • Hospitals
  • Disaster Relief
  • Spot Free Rinse/Car Wash
  • Labs
  • Pharmaceutical
  • Humidification
  • Misting
  • Manufacturing
  • Rinse Water
  • Bottled Water
  • Water stores
  • Beverage
  • Food Processing
  • Ice Makers
  • Commercial Water Treatment
  • Ice Makers
  • Tap Water
  • Brackish Water
  • Wide Variety of Other Applications

M-T2521A 2.5

Physical Dimensions of M-T2521A:


Total Length (L):

21 In. (53.3 cm)

Membrane Length (I):

19 In. (48 cm)

Diameter (D):

2.5 In. (6.4 cm)

PWT (P):

0.75 In. (1.9 cm)


Replacement Compatibility for AMI 2.5 X 21 RO MEMBRANES

Applied Membranes M-T2521A membrane elements can be used as direct replacement for many industry-standard 25x21 size RO elements with 3/4" male product water tubes ("stinger style") which are rated at 225psi. These include DuPont DOW FilmTec TW30-2521, 80641 and GE Desal AG2521TM, AG2521TF, 206719.

If you do not see your membrane listed or wish to learn more about compatibility, please contact us.  Our certified water treatment experts will be happy to discuss your application.  To ensure prompt and accurate information, please include as much information about your system as possible, such as:  model, manufacturer, model of membranes being replaced, any available. product manuals or literature associated with your system, and photographs of your system or membranes.