Memtrex FE

Summary

Product identification

Memtrex FE (MFE) filters feature absolute-rated Polytetrafluoroethylene (PTFE) membranes. These filters are inherently hydrophobic.

Description and Use

MFE filters offer broad chemical compatibility with minimal extractables across various fluids and applications. The hydrophobic PTFE membrane is particularly suited for filtering compressed air and other process gases. Filters are constructed in a clean room environment using thermal welding, without adhesives or additives, and are individually integrity tested.

Typical Applications

MFE filters provide particle retention and high purity in harsh process conditions. Typical applications include filtration of:

• Aggressive solvents such as alcohols, esters and ketones
• Corrosive acids and bases
• Vents/exhausts for autoclaves, fermenters, and storage tanks
• High purity chemicals and water used in electronics manufacturing

General Properties

Memtrex FE filters are available in the following absolute pore size micron ratings: 0.05 µm, 0.1 µm, 0.2 µm, 0.45 µm, and 1.0 µm.

Materials of Construction

• Filtration Media: Hydrophobic PTFE
• Support Layers: Polypropylene Microfiber
• Core and Cage: Polypropylene
• End Caps and Adapters: Polypropylene

Dimensions

• Nominal O.D.: 2.75” (70 mm)
• Nominal I.D.: 1.25” (31 mm)
• Effective Filtration Area: 5.9 ft² (0.55 m²) for pleated filters with PTFE membrane

Operating Limits

• Max. Forward Differential Pressure: 60 psi (4.1 bar) at 70ºF (21ºC)
• Max. Reverse Differential Pressure: 30 psi (2.1 bar) at 70ºF (21ºC)
• Max. Operating Temperature: 180ºF (82ºC) at 10 psid (0.7 bar) in water

Integrity Testing

Integrity testing specifications based on water intrusion per 10” length filter:

• 0.1 µm: ≤ 5 cc/min at 40 psig (2.76 bar)
• 0.2 µm: ≤ 5 cc/min at 30 psig (2.07 bar)
• 0.45 µm: ≤ 5 cc/min at 20 psig (1.38 bar)
• 1.0 µm: ≤ 5 cc/min at 15 psig (1.03 bar)

Performance

Performance data for flow in clean air and clean water is referenced in the original document but not provided in the extracted text. See the official PDF for exact tabulated values.

Certifications and Sterilization

• Memtrex FE filters may be autoclaved or in situ steam sterilized up to 257°F (125°C) for 30-minute cycles, with a maximum accumulated exposure of 10 hours. Steam-sterilized filters require stainless steel insert supported o-ring adaptors. Alternatively, filters can be sanitized with compatible chemical agents.
• The material in Memtrex FE pleated filters meets U.S. FDA requirements for food contact under applicable regulations in 21 CFR.
• Memtrex FE filters meet the test criteria for USP Class VI-121°C Plastics.
• Aqueous extracts from Memtrex FE filters contain less than 0.25 EU/ml and typically exhibit low levels of non-volatile residues.
• Filter cartridges are designed and manufactured for resistance to a wide range of chemical solutions, but users should verify chemical compatibility for specific applications.

Ordering Information

• Type: MFE
• Absolute Micron Rating:
  • 91 = 0.1 µm
  • 92 = 0.2 µm
  • 94 = 0.45 µm
  • 01 = 1.0 µm
  • 85 = 0.05 µm
• Nominal Cartridge Length:
  • 1 = 10 inch (25 cm)
  • 2 = 20 inch (51 cm)
  • 3 = 30 inch (76 cm)
  • 4 = 40 inch (102 cm)
• End #1 Adapter:
  • A = Open End Gasket
  • B = 120 O-Ring
  • C = 213 O-Ring
  • E = 222 O-Ring
  • F = 226 O-Ring
  • J = 020 O-Ring
  • Q = 222 O-Ring Stainless Steel Support Ring
  • Z = 226 O-Ring Stainless Steel Support Ring
• End #2 Adapter:
  • A = Open End Gasket
  • B = 120 O-Ring
  • C = 213 O-Ring
  • G = Closed End Cap
  • H = Fin Adapter
• Elastomer Material:
  • B = Buna-N
  • E = EPDM
  • S = Silicone
  • T = Teflon Encapsulated (Only in 222 and 226 Sizes)
  • V = Viton

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Disclaimer: This summary is based on the provided text extract. It may not include all figures, footnotes, or the most recent revisions of the product datasheet. For contractual data and complete information, please refer to the official OEM PDF revision used on your project.

Official datasheet (PDF)

Lenntech datasheet mirror