TefloGas Filter Cartridges
Hydrophobic PTFE Membrane · Sterilizing Grade

Cobetter TefloGas® Filter Cartridge is made of inherently hydrophobic PTFE membrane and thick thermal-resistant polypropylene core. They are characterized with non-metallic ion release, dead-free corner and easy to clean when compared to those with a stainless steel core. As a result, they are highly recommended for the sterile filtration of gas, air in pharmaceutical, biological liquids and fermentation industries.


Features and Benefits

  • Inherently hydrophobic.
  • Exceptionally high flow rates with and low pressure drops.
  • Steam sterilizable up to 150 cycles at 121°C.
  • 100% Integrity Tested by all methods including Water Intrusion Test.
  • Absolute rated filtrer.
  • Specifaction
  • Performance
  • Biological Satety
  • Ordering Information

For technical data sheet or application inquiry, you are more than welcome to contact our sales representative by sales@cobetterfilter.com or leave a message

Materials of Construction

Filter MediumHydrophobic PTFE
Support LayerPolypropylene
CagePolypropylene
CorePolypropylene / 304 stainless steel
End CapsPolypropylene
Internal Adaptor Reinforcing RingPBT ( Polybutylene terephthalate) /304 Stainless Steel
Effective Filtration Area

0.74 m2 / Ф68-10 inch
1.05 m2 / Ф71-10 inch


Operating Conditions

Maximum Temperature80°C
Max.Differential Pressure21°C / 5 bar
80°C / 2.4 bar
Steam Sterilization (Autoclave)121°C /30min up to 150 cycles




Flow Rate Characteristics

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Quality and Biological Safety

  • Integrity Testing
  • All cartridges are integrity tested by the aerosol challenge test methods with VALAIR DATA II. Diffusional Flow<16 ml/min at 0.8bar(11.6psi). Water intrusion<1.35ml/min. Values are for cartridges wetted with 60/40 IPA/Water.
  • Steam Sterilization
  • 71-GPF cartridges can be repeatedly in situ steam sterilizal for up to 150 cycles at 121°C,30min at a maximum differential pressure of 0.5 bar
  • Validation
  • 71-GPF cartridges have been fully validated as sterilizing grade
    filter cartridges, for compressed air and gas applications. It passed the DOP test with DH VALAIR DATA II.



  • Food and Biological Safety

  • Extractables< 30mg per 10 inch
    Endotoxins< 0.25EU/mL
  • Meets the requirements for food contact:  European Regulation (EC) Number 1935/2004

Ordering Information
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