GGFP/DGGF Gas Prefilter
Cobetter's GGFP series filter is made of ultra-fine glass fiber material, with up to more than 90% dirtholding space, and are suitable for gas pretreatment and precision filtration. The GGFP series filter element has the unique ability to intercept particles and effectively protect and extend the service time of the terminal sterilizing filter.
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Description
Features
- High porosity (High voids volume filter media)
- High Flow rates
- Low Pressure Drops
- Good adsorption and high filtration efficiency
- High aerosol interception efficiency of defective bacteria, effectively reducing bacteria
Applications
- Compressed air oil and particle removal filtration
- Antibiotic fermentation air pretreatment
- Bioengineering fermentation air pretreatment
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 | Glass fiber (GF) |
Support | Polypropylene (PP) |
Core/Cage/End Caps | Polypropylene (PP) |
End Cap Inserts | 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 | Removal Rating | Area/10" |
71 mm | GGFP 0.5 μm | 0.34 m² |
Bacterial Retention
Model | Content |
DGGFP 0.1 μm | LRV>7 for aerosol contains more than 1×10⁹ Brevundimonas diminuta cfu/10 inch (ATCC 19146) |
Sterilization
In-line steam sterilization | Up to 20 cycles (121°C for 30 min and differential pressure<30kPa 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
GGFP
Outer Diameter | Type | Removal Rating | End Cap | Nominal Length | Seal Material | Industry |
Blank 68mm | GGFP | 0050 0.5 µm | DOE Double Open End | 05 5 inch | S Silicone | C |
71 71mm | HTF 222/Fin (PBT insert) | 10 10 inch | E EPDM | P | ||
HSF 226/Fin (PBT insert) | 20 20 inch | V Viton | ||||
HTCG 222/Flat (PBT insert) | 30 30 inch | P FEP/PFA encapsulated O-rings | ||||
HSCG 226/Flat (PBT insert) | 40 40 inch |
DGGF
Outer Diameter | Type | Core Material | Removal Rating | End Cap | Nominal Length | Seal Material | Industry |
空 68mm | DGGF | Blank SS | 0001 0.01 µm | DOE Double Open End | 05 5 inch | S Silicone | C |
71 71mm | P PP | HTF 222/Fin (PBT insert) | 10 10 inch | E EPDM | P | ||
HSF 226/Fin (PBT insert) | 20 20 inch | V Viton | |||||
HTCG 222/Flat (PBT insert) | 30 30 inch | P FEP/PFA encapsulated O-rings | |||||
HSCG 226/Flat (PBT insert) | 40 40 inch |
*Example:GGFP0050DOE05SC (GGFP,0.5µm,Double open end,5 inch,Silicone,Industrial)