2.5"x21" | 300 GPD | 99.6% Salt Rejection | Watermaker Seawater RO Membrane | Applied Membranes
Item will ship in 5 days.
Brand | APPLIED MEMBRANES INC. | |
---|---|---|

AMI 2.5x21 Seawater Desalination Reverse Osmosis Membranes
For Watermakers and Land-and-Sea Based Seawater Desalinators
Highest Salt Rejection Seawater RO Watermaker MembranesAMI high rejection and high productivity seawater reverse osmosis membranes are specially designed for marine applications. AMI SWRO membranes are ideal for seawater desalination in shipboard applications, watermakers, land-based desalinators and sea-based desalinators. AMI Membranes are Made in the USA in their ISO 9001:2015 Certified Facility and are 100% Quality and Performance Tested. Looking for a replacement seawater desalination membrane element for your watermaker filter system? View our Watermaker Replacement Membrane Chart. Benefits of AMI Seawater Desalination RO Membranes:
![]() |
M-S2521A Specifications
Permeate flow and salt rejection based: 32,000 ppm NaCl feed stream, 77°F, and pressure and recovery listed above. Element Permeate flow may vary +/- 20% Operating Limits for M-S2521A
|
|||||||||||||||||||||||||||||||||||||||||||||||
Related Products for use with M-S2521A Seawater Elements
PRO-2.5-1200-EP-21 | 2.5x21 Fiberglass Membrane Housing for Seawater RO Membranes (Water Maker Pressure Vessel) |
C-C2510-A11 | Membrane Cleaning Cartridge with Acid Cleaner to Remove Scale Buildup and Prolong Membrane Life |
C-C2510-A22 | Membrane Cleaning Cartridge with Alkaline Cleaner to Remove Organics and Prolong Membrane Life |
C-C2510-A88 | Membrane Preservative Cartridge for Preserving the System and Membrane During Extended Periods of Non-Operation. |
655139-03 | Oil Absorbing Filter Cartridge - Oil-Water Separator Replacement Cartridge, 20" Big Blue Pentair Pentek Filter |
H-F10100CF | Plankton Filter - 10" Standard 100 Micron Spun Polypropylene Replacement Filter Cartridge |
Common Applications for AMI Seawater Membrane Elements:
|
|
Physical Dimensions of AMI M-S2521A SWRO
![]() |
|
Replacement Compatibility for AMI 25x21 SWRO Membranes
AMI 2.5" x 21" membrane elements can be used as direct replacements for DOW FilmTec DuPont SW30-2521, Katadyn Spectra FT-MB-20, and most industry-standard 2.5" x 21" seawater RO membranes, in SWRO systems using these elements. Some common systems using these elements are:
- Spectra Ventura 150
- Spectra Ventura 150C
- Spectra Ventura 200T
- Spectra Ventura 200c
- Spectra Catalina 340c Compact
- Spectra Cape Horn Extreme 330 Compact
- Spectra Newport 400c Compact
- Spectra Aquifer 150
- Spectra Aquifer 200
- Spectra Aquifer 200 Expedition
- Spectra Aquifer 200 Power Pack Solar
- Spectra Aquifer 360
- Katadyn Ventura 150
- Katadyn Ventura 150C
- Katadyn Ventura 200T
- Katadyn Ventura 200c
- Katadyn Catalina 340c Compact
- Katadyn Cape Horn Extreme 330 Compact
- Katadyn Newport 400c Compact
- Katadyn Aquifer 150
- Katadyn Aquifer 200
- Katadyn Aquifer 200 Expedition
- Katadyn Aquifer 200 Power Pack Solar
- Katadyn Aquifer 360
- VT-150-12, VT-150-24
- VT-150c-12, VT-150c-24
- VT-200-T-12, VT-200-T-24, Ventura 200T Deluxe
- VT-200-12, VT-200-24, VT-200c-12, VT-200c-24
- CH-330S-12, CH-330S-24
- NP-400cS-12, NP-400cS-24
- AF-150-DC-12, AF-150-DC-24
- AF-200-DC-12, AF-200-DC-24, AF-150-EX-24, AF-200-PPS
- Flight Ready Aquifer 360, AF-360-DC-12, AF-360-DC-24
If you do not see your system 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.