LOFMEM-T

Summary

Product identification

LOFMEM™T Series Absolute Rated PTFE Membrane Filter Cartridges are designed for precision filtration in harsh, corrosive environments. They feature a polytetrafluoroethylene (PTFE) membrane with polypropylene support layers and components. The HIMA retentive PTFE membrane offers superior hydrophobicity and water intrusion resistance compared to PVDF-based media, while being more economical than all-fluorocarbon filters.

Specific applications include: strong acids/bases, compressed gases, photoresists, pharmaceutical intermediates, hot DI water, and fermentation air.

Features and Benefits

• High flow rates and high surface area minimize total system size requirements.
• Integrity testing and 100% flushing with 18 MΩ-cm de-ionized water prior to shipment.
• Validated to USP Class VI Biological Standards for Plastics.
• Manufactured in ISO Class 7 Cleanroom Environment.
• Full traceability marking.

Filter Specifications

• Media: Gore-Tex® expanded PTFE membrane
• Inner core, end caps, cage: Polypropylene
• Support layers: Polypropylene
• O-Rings: Buna-N, EPDM, Silicone, Viton©, Teflon© encapsulated Viton
• Micron ratings: 0.05, 0.1, 0.2, 0.45, 1.0 µm

Operating limits

• Max. operating temperature: 203°F (95°C)
• Max. operating pressure:
  • 75 psid @ 70°F (5.2 bar @ 21°C)
  • 40 psid @ 176°F (2.8 bar @ 80°C)
  • 15 psid @ 203°F (1.03 bar @ 95°C)
• Maximum reverse differential pressure: 40 psid @ 70°F (2.8 bar @ 21°C)
• Steam/Autoclave: Cartridges will withstand at least 50 steam/autoclave 1-hour cycles @ 275°F (135°C).

Integrity Test Values

Air Diffusion per 10 inch cartridge wet with 60/40 IPA/water. Contact Eaton for specific method.

• 0.05 µm: ≤ 50 cc/min @ 22 psig (1.5 bar)
• 0.1 µm: ≤ 50 cc/min @ 18 psig (1.2 bar)
• 0.2 µm: ≤ 20 cc/min @ 12 psig (0.8 bar)
• 0.45 µm: ≤ 15 cc/min @ 5 psig (0.34 bar)
• 1.0 µm: ≤ 15 cc/min @ 3 psig (0.2 bar)

Mechanical / Hydraulic

• Typical Nominal lengths: 9.75", 10", 20", 30", 40" (24.8, 25.4, 50.8, 76.2, 101.6 cm)
• Outside diameter: 2.7" (6.9 cm)
• Inside diameter: 1.0" (2.54 cm)
• Surface area: 8.5 ft² (0.79 m²) – 10 inch element

Flow rate charts for Air Flow Rate at system pressures < 10 psig and 30 psig, and Water Flow Rate (per 10" cartridge) are available in the official PDF. See the official PDF for exact tabulated values.

Ordering Information

The filter specification code uses the following structure: LMT-[Nominal Length]-[Retention Rating]-[End Configuration]-[Gasket or O-Ring].

• Filter Series: LOFMEM-T
• Nominal Length:
  • -9: 9.75"
  • -10: 10.0"
  • -20: 20.0"
  • -30: 30.0"
  • -40: 40.0"
• Retention Rating:
  • -0.05 micron
  • -0.1 micron
  • -0.2 micron
  • -0.45 micron
  • -1.0 micron
• End Configuration:
  • DOE: Double Open End
  • -1: 226/Flat Single Open End
  • -2: 222/Fin Single Open End
  • -3: 226/Fin Single Open End
  • -4: 222/Flat Single Open End
  • -10: Double Open End, Internal O-Ring
  • -20: Single Open End, Internal O-Ring
• Gasket or O-Ring:
  • S: Silicone
  • B: Buna-N
  • E: EPDM
  • V: Viton
  • T: FEP/Viton (O-Rings only)

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror