Sterile Vent Filter (0.01 µm Hydrophobic PTFE/PVDF Cartridge, 10-inch, GMP-Compliant)
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | 1-Cartridge, 10-inch |
| Price Range | USD 140 – 1,400 |
Overview
The Sterile Vent Filter is an engineered gas-exchange isolation device designed for aseptic process environments in pharmaceutical manufacturing, bioprocessing, food & beverage production, and upstream/downstream biotechnology applications. It functions as a critical barrier at tank vent ports—enabling free passage of process gases (e.g., air, nitrogen, CO2) while preventing ingress of airborne microorganisms, endotoxins, and particulate contaminants. Its operational principle relies on surface retention and depth filtration via hydrophobic microporous membranes, ensuring sterility assurance without compromising flow integrity or pressure stability. The filter complies with core design principles outlined in ISO 13408-2 (sterile processing of medical devices), USP Sterility Tests, and Annex 1 of the EU GMP Guidelines for sterile manufacturing.
Key Features
- Hydrophobic membrane constructed from either polytetrafluoroethylene (PTFE) or polyvinylidene fluoride (PVDF), providing inherent resistance to wetting by aqueous solutions and steam condensate
- Rated absolute pore size of 0.01 µm — validated to retain ≥99.9999% of challenge organisms including Brevundimonas diminuta (ATCC 19146, 0.2–0.3 µm) and bacteriophage ΦX174 (27 nm), per ASTM F838-22
- Single-cartridge, 10-inch (254 mm) format with standard 222-mm sanitary clamp or threaded housing interface (e.g., Tri-Clamp® or DIN 11851)
- Full integrity test compatibility: bubble point, diffusion, and pressure hold testing per ASTM F316-21 and ISO 15883-5
- Autoclavable and steam-in-place (SIP) compatible up to 121°C for ≥30 minutes; validated for ≥10 consecutive SIP cycles without performance degradation
- GMP-compliant construction: non-pyrogenic, extractables/leachables tested per USP , housing materials compliant with FDA 21 CFR §177.1520 (for plastics) and §177.2600 (for fluoropolymers)
Sample Compatibility & Compliance
This vent filter is suitable for installation on stainless steel storage tanks, bioreactors, buffer preparation vessels, media tanks, and clean utility systems where sterile gas exchange is required. It is not intended for liquid filtration or high-particulate gas streams. The hydrophobic membrane ensures stable performance under variable humidity conditions and resists fouling from ambient aerosols. All units are supplied with full documentation packages—including Certificate of Conformance, Certificate of Sterilization (if pre-sterilized), and batch-specific integrity test reports—supporting regulatory submissions under FDA 21 CFR Part 211, EMA Annex 15, and ICH Q5A/Q5D. Design qualification (DQ), installation qualification (IQ), and operational qualification (OQ) protocols are available upon request to support validation lifecycle management.
Software & Data Management
While the vent filter itself is a passive mechanical component, its integration into automated process systems enables digital traceability. When paired with programmable logic controllers (PLCs) or SCADA systems, real-time monitoring of differential pressure across the filter can be logged to support predictive maintenance and alarm thresholds. Integrity test results may be recorded electronically with audit trail functionality compliant with FDA 21 CFR Part 11 requirements, including user authentication, timestamped entries, and immutable data storage. Optional IQ/OQ documentation templates align with ASTM E2500 and ISPE Baseline Guide Volume 5 for single-use and reusable system qualification.
Applications
- Aseptic venting of stainless steel bioreactors during fed-batch and perfusion culture
- Gas overlay control in cell banking and cryogenic storage systems
- Steam-sterilizable venting of purified water (PW) and water-for-injection (WFI) distribution loops
- Microbial barrier protection for raw material silos and powder blending hoppers
- Isolation of environmental air in HVAC return lines serving Grade A/B cleanrooms
- Backup sterilizing filters in compressed air systems meeting ISO 8573-1 Class 0 purity requirements
FAQ
Can this vent filter be used for continuous operation under positive pressure?
Yes — it is rated for continuous service at operating pressures up to 5 bar(g) and temperatures up to 121°C during SIP cycles. Differential pressure must remain within specified limits to maintain integrity.
Is the filter validated for viral clearance?
While the 0.01 µm rating exceeds the size of most enveloped viruses, formal viral clearance validation requires client-specific spiking studies per ICH Q5A(R2). This filter serves as a robust physical barrier but does not replace dedicated virus filtration steps in downstream purification.
What is the recommended replacement interval?
Replacement is determined by integrity test failure, excessive differential pressure rise (>0.5 bar), or completion of maximum validated SIP cycles — not calendar time. Routine post-SIP bubble point testing is strongly advised.
Does the housing require special cleaning agents?
No — standard CIP procedures using 0.5–1.0% NaOH or 0.1–0.5% phosphoric acid are compatible. Avoid chlorine-based oxidants that may degrade fluoropolymer membranes.
