SKU: 29306456479

4" x 40" Nanofiltration Membrane | NF 90| 90% Salt Rejection

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Description

4" x 40" Nanofiltration Membrane | NF 90| 90% Salt Rejection4" x 40" Nanofiltration Membrane NF9 90% Salt Rejection 97% Hardness Rejection Applied Membranes NF9 spiral wound nanofiltration elements provide high productivity performance while removing a high percentage of salts, nitrate, iron and organic compounds such as pesticides, herbicides and THM precursors. The low net driving pressure of the NF9 membrane allows the removal of these compounds at low operating pressures. AMI NF Membranes are in their ISO


4" x 40" Nanofiltration Membrane | NF9 - 90% Salt Rejection | 97% Hardness Rejection


Applied Membranes NF9 spiral wound nanofiltration elements provide high productivity performance while removing a high percentage of salts, nitrate, iron and organic compounds such as pesticides, herbicides and THM precursors. The low net driving pressure of the NF9 membrane allows the removal of these compounds at low operating pressures.

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


Features of Applied Membranes Nanofiltration Membranes:

  • 90% Average Ion Rejection
  • >97% Hardness Rejection
  • High flux results in high yields
  • Low energy usage reduces power consumption and cost
  • Durable with good cleanability for long element life
  • 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

M-N4040A9 Specifications

AMI Part Number: M-N4040A9
Membrane Size (Nominal): 4x40
Membrane Dimensions: 3.9"Dia. x 40"L
Flow Rate: 2,000 GPD (7,570 LPD)
Test Pressure: 150 psi (1 MPa)
Average Salt Rejection (NaCl): 90%
Average Hardness Rejection (MgSO4): 97% +
For Housing: Standard 4" x 40"
Outer Wrap: Tape Wrapped
Membrane Type: N9 Nanofiltration
Element Type: Spiral Wound
Feed Water Test Temperature: 77°F (25°C)
Single Element Recovery: 15%
Chlorine Tolerance: < 0.1
Feed water pH Range: 3-10
End Style: Male PWT (Stinger Style)
Can Replace: DuPont FilmTec NF90-4040
Manufacturer: Applied Membranes, Inc.
Country of Manufacture: United States (USA)

Note: Performance specifications based on 2,000 mg/l magnesium sulfate, 150 psi (1 MPa) applied pressure, 77ºF (25ºC) feed water temperature, and the recovery listed in the table above. Element permeate flow may vary ± 20%. Permeate flow rates for feed streams other than water will vary.

Applications for Nanofiltration Membrane Elements:

  • Commercial water demineralization
  • Food and Beverage
  • Pharmaceutical

Physical Dimensions of M-N4040A9:

Total Length (L):

40 In. (101.6 cm)

Membrane Length (I):

38 In. (96 cm)

Diameter (D):

3.9 In. (9.9 cm)

PWT (P):

0.75 In. (1.9 cm)


Replacement Compatibility for AMI 4 X 40 NF MEMBRANES

Applied Membranes M-N4040A9 membrane elements fit industry standard 4040 membrane housing pressure vessels and can be used as direct replacement for many industry-standard 4x40 size spiral wound nanofiltration elements with 3/4" male product water tubes ("stinger style"). These include DuPont DOW FilmTec NF90-4040.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 29306456479

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Tracy
Dallas, US
★★★★★ 4
Easy to put together
Color: Rustic Brown + Black
Easy to put together, looks nice with my coffee collection
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Reviewed in the United States on October 8, 2025
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GEORGETTE
Louisville, US
★★★★★ 5
Love them
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They are very nice. Easy to assemble and what I expected.
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Reviewed in the United States on January 20, 2026
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Daniel & Amanda
West Palm Beach, US
★★★★★ 5
They are sturdy and practical for the price
Color: White + Gold, Color: White + Gold
Better than I thought they would be for the price. The metal seems very sturdy the shelves you can use or even make your own. I really truly like the way it’s built.
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Reviewed in the United States on April 9, 2026
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Cat Mama
Chelsea, US
★★★★★ 5
Love these!
Color: White + Gold, Color: White + Gold
Quality is great- I bought for my blind box collections to show case. Love the hook and shelf option!
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Reviewed in the United States on February 8, 2026
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. Ray
New York, US
★★★★★ 5
Beautiful shelves
Color: Rustic Brown + Black
Love these shelves
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Reviewed in the United States on May 10, 2026

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