DGPFMP/GPFMP Sterilizing-grade Gas Filter
Cobetter DGPFMP Series Filter Cartridges are composed of double-layer hydrophobic PTFE membrane and a thick thermal resistant polypropylene core. They are highly recommended for air and gas sterile fltration of pharmaceutical, biopharmaceutical and fermentation industries. Both inherently hydrophobic and 100% integrity testing ensure absolute sterilization.
Cobetter GPFMP Series Filter Cartridges are composed of single-layer hydrophobic PTFE membrane and a thick thermal-resistant polypropylene core. They are highly recommended for air and gas sterile fltration of pharmaceutical,biopharmaceutical and fermentation industries. Both inherently hydrophobic and 100% integrity testing ensure absolute sterilization.
Recommended Applications:
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Description
Features
- Absolute sterilization in dry or wet conditions
- High flow rates, low pressure drop, higher retention efficiency
- Better temperature and pressure resistance with a thick thermal-resistance polypropylene core
- High temperature resistance, optional SIP or repeated autoclave
- 100% integrity tested before delivery ensure filter's integrity and sterilization performance when using
Applications
- Vent filtration for fermenter, storage tank, mix tank, etc
- Aseptic packaging air sterile filtration
- Compressed air and nitrogen gas sterile filtration
- Corrosive gases sterilization
Quality
- 100% Integrity testing in manufacturing
- Each filter is fully traceable with unique serial number
- Manufactured in a facility which adheres to ISO 9001:2015 Practices
Flow Rate (Air)

Specifications
Materials of Construction
Membrane | Double-layer or Single-layer hydrophobic polytetrafluoroethylene (PTFE) |
Support | Polypropylene (PP) |
Core/Cage/End Caps | Polypropylene (PP) |
End Cap Inserts | 316L Stainless Steel, Polybutylene terephthalate (PBT) |
Seal Material | Silicone / EPDM / Viton FEP/ PFA encapsulated O-rings |
Operating Conditions
Max. Operating Temperature |
80°C |
Max. Operating Pressure |
0.69 MPa@25°C 0.40 MPa@60°C 0.24 MPa@80°C |
Max. Differential Pressure (Forward) |
0.69 MPa@25°C 0.40 MPa@60°C 0.24 MPa@80°C |
Max. Differential Pressure (Reverse) |
0.30 MPa@25°C 0.10 MPa@80°C |
Filtration Area
Outer Diameter | Membrane Pore Size | Area/10" | |
DGPFMP | 68 mm | 0.003 μm (gas) | 0.75 m² |
68 mm | 0.22 μm (liguid) | 0.75 m² | |
GPFMP | 68 mm | 0.01 μm (gas) | 0.68 m² |
68 mm | 0.22 μm (liquid) | 0.68 m² |
Integrity Test Standards @10inch,20℃ (DGPFMP)
Membrane Pore Size | Bubble Point | Diffusion Flow (Air) | Water Flow Test |
0.003 μm/0.22 μm | ≥ 0.11 MPa,60% IPA, 40% Water, Air test | ≤ 20 ml/min @ 0.08 MPa,60% IPA, 40% Water | ≤ 0.50 ml/min @ 0.25 Mpa |
Integrity Test Standards @10inch,20℃ (GPFMP)
Membrane Pore Size | Bubble Point | Diffusion Flow (Air) | Water Flow Test |
0.01 μm/0.22 μm | ≥ 0.10 MPa,60% IPA, 40% Water, Air test | ≤ 24 ml/min @ 0.095 MPa,60% IPA, 40% Water | ≤ 0.75 ml/min @ 0.25 Mpa |
Bacterial Retention
Model | Content |
DGPFMP 0.22 μm | Bacterial quantitative retention of 10⁷ cfu/cm² Brevundimonas diminuta (ATCC 19146) accordingto ASTM F838 methodology. |
DGPFMP 0.003 μm | Retention efficiency for > 1×10⁸ pfu Bacteriophage Phi-X174 (ATCC 13706-B1) phage aerosol LRV > 7 |
GPFMP 0.22 μm | Bacterial quantitative retention of 10⁷ cfu/cm² Brevundimonas diminuta (ATCC 19146) accordingto ASTM F838 methodology. |
GPFMP 0.01 μm | Retention efficiency for > 1×10⁸ pfu Bacteriophage Phi-X174 (ATCC 13706-B1) phage aerosol LRV > 7 |
Sterilization
In-line steam sterilization | Up to 100 forward cycles and 50 reverse cycles (145 °C for 30 min, differential pressure < 30 kPa per forward cycle and differential pressure < 10 kPa per reverse cycle) |
Autoclave | Up to 400 cycles (130 °C for 30 min per cycle) |
Regulatory Compliance
- Autoclaved filter effluent meets the USP<788> requirement of particulate matter in large volume injection.
- Component materials meet the criteria for a "Non-fiber-releasing filter" as defined in 21 CFR 210.3(b)(6).
- Aqueous extraction from a cartridge contains less than 0.25EU/ml as determined by Limulus Amebocyte Lysate (LAL), meeting requirements of USP<85>.
- Meet the requirement of USP <87> In Vitro Cytotoxicity Test.
- Component materials meet the requirements of the current USP<88> for plastic class VI-121°C.
- All component materials meet the FDA Indirect Food Additive requirements cited in 21 CFR 177-182.
- Based on the current information from our suppliers, all component materials used in the manufacture of this product are animal-free.
End Cap

Ordering Information
DGPFMP (Double-layer)
Outer Diameter | Type | Membrane Pore Size | End Cap | Nominal Length | Seal Material | Industry |
Blank 68mm | DGPFMP | S003 0.003 µm | DOE Double Open End | 05 5 inch | S Silicone | P |
0022 0.22 µm | HTF 222/Fin | 10 10 inch | E EPDM | |||
SSF 226/Fin (SS insert) | 20 20 inch | V Vition | ||||
HSF 226/Fin (PBT insert) | 30 30 inch | P FEP/PFA encapsulated O-rings | ||||
SSCM 226/Flat (SS insert) | 40 40 inch | |||||
HSCG 226/Flat (PBT insert) |
GPFMP (Single-layer)
Outer Diameter | Type | Membrane Pore Size | End Cap | Nominal Length | Seal Material | Industry |
Blank 68mm | GPFMP | 0001 0.01 µm | DOE Double Open End | 05 5 inch | S Silicone | P |
0022 0.22 µm | HTF 222/Fin | 10 10 inch | E EPDM | |||
SSF 226/Fin (SS insert) | 20 20 inch | V Vition | ||||
HSF 226/Fin (PBT insert) | 30 30 inch | P FEP/PFA encapsulated O-rings | ||||
SSCM 226/Flat (SS insert) | 40 40 inch | |||||
HSCG 226/Flat (PBT insert) |
*Example:DGPFMPS003DOE05SP (DGPFMP,0.003µm,Double open end,5 inch,Silicone,Pharmaceutical)