Sterile Gas & Venting

In gas filtration, two key contaminants must be removed before final sterile gas filtration: condensate formed in transfer lines due to temperature reduction, and oil and particulates that may already contaminate the gas depending on its source or are introduced during manufacturing, transportation, or storage.

Any gas filtration system must remove these contaminants to ensure the gas is free from condensate, oil, and particulates before reaching the sterile gas filter. This allows the filter to operate at low differential pressure and effectively remove microorganisms, bacteria, and viruses, preventing their transfer into the process or product.

Products to Address Sterile Gas Filtration Challenges

Fermentation: All fermenters must maintain aseptic conditions between inlet gas and off-gas.Gas filters provides an effective barrier to protect both the product and the environment.

  • PTFE Gas Cartridge Filters
  • Gas Cartridge Filter Housings

Storage & Product Sterile Tank Vent Filtration: As tanks fill and empty, they need to breathe. The gas entering and leaving the tank must be sterile filtered to prevent contamination.

  • PTFE Gas Cartridge Filters
  • Tank Vent Filter Housings
  • Glass Fibre Depth Cartridge Filters

Autoclaves & Lyophilisation: Products, equipment, and tools are sterilised before use in pharmaceutical, hospital, and clinical settings. Autoclaves and lyophilisers require sterile air to break the vacuum cycle.

  • PTFE Gas Cartridge Filters
  • Gas Cartridge Filter Housings
  • Glass Fibre Depth Cartridge Filters

Key Applications for Sterile Gas Filtration

Compressed Gas Sterilisation: Sterilisation of gases is crucial in fermentation, dairies, and breweries, where significant amounts of compressed gas contact the product. Gas membrane filters remove microorganisms, bacteria, and viruses, filtering down to 0.02 microns in dry gas conditions. These filters are available in various cartridge formats and capsules suitable for different application sizes. Healthcare and pharmaceutical industries often use membrane gas filtration. GF Air pleated depth filter cartridges offer superior flow characteristics, reducing initial capital costs or operating expenses.

Sterile Tank Venting: In many food and beverage manufacturing processes, products are stored in tanks that breathe as they fill and empty. Vent filters fitted with Gas or GF cartridges prevent airborne contamination. If the product in the tank is hot, vapour may cause condensation on a cold filter, leading to blinding. Heated housing options can prevent this issue.

Autoclaves & Lyophilisation: Sterilisation of products, equipment, and tools in pharmaceutical, hospital, and clinical areas requires sterile air to break the vacuum during the sterilisation cycle. Autoclave filters ensure that only sterile air enters the autoclave or lyophiliser chamber. Gas PTFE membranes or GF depth autoclave filters are available based on user preference and budget.