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L38 Series - Sterilizing Filter Cartridges

L38 series filter cartridges are made of hydrophobic PTFE membrane ensuring the sterilizing performance in different humidity environments. The PP components offer remarkable oxidation resistance. The filter cartridges reintorced core and higher pressure resistance features. The series applies to fermentation, pharmaceutical, and biotechnology.


  • Inherently hydrophobic PTFE membranes
  • Oxidation resistant hardware
  • High-flow rate and low pressure drop
  • Enhanced steaming resistance
  • 100% Integrity tested


  • Corrosive gas sterile filtration
  • Compressed air and nitrogen gas solution
  • Aseptic packaging
  • Fermenter inlet air and exhaust venting, sterile process air and sterile venting of tanks


  • Length 5”, 10”, 20”, 30”, 40”
  • Out Diameter 69mm
  • Filtration Area 0.8m² per 10” filter

Material of Constructions

  • Membranes. Inherently hydrophobic PTFE
  • Support/Drainage. Oxidation resistant PP
  • Cage/Core/Endcap. Oxidation resistant PP
  • O-ring. Silicone, EPDM, FKM

Removal Efficiency

0022 Gas: 0.01μm
  Liquid: 0.2μm

Operating Conditions

  • Maximum Differential Pressure 5.2Bar @ 20℃
  • Maximum Operating Temperature 2.4Bar @ 80℃


Inline Steam Sterilization 135℃/30min,
  150 cycles
Maximum Forward Steam Sterilization 1Bar @ 125℃
  0.3Bar @ 142℃
Maximum Reverse Steam Sterilization 0.5Bar @ 125℃
  0.2Bar @ 142℃

Integrity Test Parameters

Bubble Point (BP) ≥ 1.1Bar @ IPA: Water 60:40
Diffusion Flow (DF) L38P ≤ 16ml/min @ 1035mbar
  L38W ≤ 24ml/min @ 1035mbar
Water Instrusion (WIT) L38P ≤ 0.38ml/min @ 2500mbar
  L38W ≤ 0.75ml/min @ 2500mbar


  • Manufacturered in a clean room environment
  • Manufacturered according to ISO9001:2015 certified Quality Management System
  • Material of construction comply with FDA regulations for food and beverage contact use as detailed in the US Code of Federal Regulations 21CFR
  • 100% integrity tested
  • Each individual element is tracked by serial number

Ordering Information

To place an order, please make up the product code of the configuration you need, guided by the tabular data and observing the order of the values in the code according to the picture. After that, click the Order button and enter the received code in the Product field. Fill in the remaining fields of the Order form and click Submit. Our managers will contact you soon.

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