BFE Test Rig

The Bacterial Filter Efficiency (BFE) Test Rig developed by CH Technologies allows for the testing of medical face mask materials and filters according to ASTM 2101 with Staphylococcus Aureus. This turn-key system provides a quantitative method for determining the filter efficiency of mask materials with a maximum filtration efficiency of 99.9%.

Availible in both Glass or Stainless Steel Column configurations. The BLAM is the aerosol generator of choice for this test rig which allows for a tunable size distribution to provide a bio-aerosol with an average diameter of 3.0 microns.


Brochure and Specifications
  • For testing according to ASTM 2101 with Staphylococcus Aureus
  • Complete test rig with everything you need to get started immediately
  • Availible in Glass or SS configurations
  • Provides quick and reliable results
  • Short set up time
  • Glass or SS Aerosol Column with Built-In Mask/ Media Holder
  • 4 Jet Standard Flow BLAM Atomizer
  • Syringe Pump
  • 6 Stage Viable Cascade Impactor
  • Control Unit (Includes Calibrated Rotameters, Pressure Regulator, Pressure Gauge, Flow Switches, Filters and Tubing)
  • HEPA Filters and Dryer
  • Custom Ring Stand with Lab Jack Support
  • Rotary Vein Vacuum Pump
  • The liquid test article (Bacterial Solution) is loaded into the syringe pump.
  • The test article is then injected into the BLAM atomizer at a controlled rate.
  • Agar Plates/Pitridishes are mounted on different stages of the viable impactor.
  • The test specimen(filter media) is clamped into the system for susbsequent exposure.
  • The BLAM generates a bio-aerosol from the test article solution inside the Glass or Steel Column.
  • The agar plates are taken out for further analysis.

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