EPTFE

Summary

Product identification

The EPTFE-Series filter cartridges are High Purity Electronics Grade PTFE filters, featuring an expanded polytetrafluoroethylene (PTFE) membrane. They are designed for superior chemical resistance in high-purity microelectronics applications.

Key characteristics:

• Retention ratings: As fine as 0.02 micron (20 nanometers), ensuring consistent contaminant removal in aggressive fluids and organic solvents.
• Air and gas applications: Single-layer PTFE membrane provides superior hydrophobicity compared to polypropylene or PVDF, preventing water wetting and associated diminished flow.
• Manufacturing: Each element is integrity tested and manufactured in a clean-room environment to maintain high standards of purity and cleanliness.
• Wet-pack option: Cartridges are available with a wet-pack option (60/40 IPA/DI water solution) to eliminate the need for wet-out in the environment.

Construction Materials:

• Membrane: PTFE
• Support Layers: Polypropylene
• Cage/Core/Adapters: Polypropylene
• Seals: Buna, EPDM, Silicone, Teflon® Encapsulated Viton®, Viton®

Typical Applications

These filters are suitable for:

• Solvent filtration
• Etching bath solutions
• High purity rinse water
• Photochemical solutions
• Bulk chemical delivery
• Ultrapure electronics-grade gases

Mechanical / hydraulic

Dimensions:

• Length: 10 to 40 inches (25.4 to 101.6 cm) nominal
• Outside Diameter: 2.70 inches (7.0 cm) nominal

Operating limits

• Change Out ΔP (recommended): 35 PSID
• Temperature (max): 176˚F (80˚C)
• Differential Pressure (max): 50 PSID (3.4 bar) at 68˚F (20˚C)

Flow Rate vs Pressure Drop data is available; refer to the official PDF.

Food Safety Compliance

Materials of construction comply with FDA regulations for food and beverage contact use as detailed in the US Code of Federal Regulations, 21CFR. Materials used to produce filter media and hardware are deemed safe for use in contact with foodstuffs in accordance with EU Directives 2002/72/EC, 1935/2004, and/or 10/2011.

Ordering Information

Ordering is based on specifying parameters for the EPTFE series:

• Rating (µ): 0.02 (20 nm), 0.03 (30 nm), 0.05 (50 nm), 0.1, 0.2, 0.45, 1.0
• Length: 10” (25.4 cm), 20” (50.8 cm), 30” (76.2 cm), 40” (101.6 cm)
• End Cap Style:
  • 2 = DOE Flat Gasket
  • 3 = 222 w/ Fin
  • 4 = 222 w/ Flat Cap
  • 6 = 226 w/ Flat Cap
  • 7 = 226 w/ Fin
  • 28 = 222 3-tabs w/ Fin
• O-Rings/Gaskets: B = Buna, E = EPDM, S = Silicone, T = Teflon® Encapsulated Viton®, V = Viton®
• Options: I = Stainless Steel Insert, W = Wet-Packed

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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