Capsule venting filter, 0.22 um hydrophobic PTFE membrane, filtration area of 20 cm2 in 64 mm OD polypropylene housing. Hose barb connections. Non sterile. Antarisz brand. 20/PK.
Vent filters are used to provide pressure equalization and contamination control during solvent handling, sample preparation, and laboratory processes. This category includes hydrophobic, membrane‑based vent filters designed to allow gas exchange while helping limit particulate and microbial ingress in non‑sterile systems.
These vent filters are supplied under the Antarisz™ brand, offering economical and reliable solutions for chromatography laboratories and general laboratory workflows where clean venting and cold sterilization practices are employed.
Function & Intended Use
Vent filters are designed to:
Allow air or gas flow for pressure relief and equalization
Help reduce particulate and microbial contamination during handling
Support cold sterilization workflows, where system components are sterilized chemically rather than by heat
These filters are not supplied as sterile products, but may be used in systems that undergo chemical or cold sterilization prior to use.
Design & Material Characteristics
Key design features include:
Hydrophobic PTFE membrane, allowing efficient airflow while resisting liquid penetration
Wide chemical compatibility, suitable for common lab solvents, gases, and buffers
Durable construction, capable of withstanding multiple autoclave cycles if required for housing reuse
Lightweight housing, reducing tubing stress and preventing crimping in carboy or vessel venting setups
The PTFE membrane supports high flow rates in a compact format, enabling reliable venting without compromising handling efficiency.
Applications & Use Cases
Vent filters in this category are commonly used for:
Vacuum line protection
Venting of media flasks, reservoirs, and carboys
Venting during HPLC sample preparation and solvent handling
Gas purging of laboratory vessels
Supporting cold‑sterilized systems in cell culture, fermentation, and analytical workflows
Inline particulate control during filling and transfer operations
These filters are suitable for non‑sterile systems that rely on clean handling practices and chemical sterilization procedures.
Why Use Vent Filters
Supports controlled pressure equalization
Helps limit contamination during solvent and media handling
Integrates easily into existing laboratory setups
Complements syringe, membrane, and inlet filtration strategies
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