Complete Six Stage Viable Andersen Cascade Impactor System
The TE-10-800 Six Stage Viable Andersen Cascade Impactor is used for the collection of airborne aerosols containing bacteria or fungi. This precision-machined system uses high-quality aluminum plates with successively smaller diameter holes to collect and size-separate viable bioaerosols for microbiological analysis.
Operating Principle
As ambient air cascades through the different stages, the corresponding particulates impact on the stage as the smaller particulates continue to travel through the stages until they are entrapped on the corresponding plate. Particles with aerodynamic diameters larger than 7 µm impact the agar in the first stage, while particles with aerodynamic diameters between 7 µm and 4.7 µm are collected in the second stage, and so on for the rest of the stages. Each of the six stages contains 400 orifices for optimal particle separation and collection efficiency.
Key Specifications
- Flow Rate: 28.3 LPM (SLPM) for consistent sampling performance
- Stages: Six aluminum jet stages with precision-machined orifices
- Collection Method: Standard 100 x 15 mm Petri dishes with agar medium
- Construction: Aluminum inlet cone, stages, and base plate with O-ring seals
Complete System Includes
- Aluminum six-stage impactor assembly
- Vacuum pump (28.3 LPM capacity)
- Connecting tubing
- Protective carrying case
- Certificate of calibration
Microbiological Analysis
The viable bacterial particulates collected on each stage are incubated and then counted or identified. They can then be recorded and related to where they may be deposited on the human lung. Since the bioaerosol particles impact directly onto the growth media, the samplers can be directly transferred to an incubator and observed for microbial growth.
Applications
The TE-10-800 is essential for environmental monitoring professionals conducting bioaerosol assessments in:
- Indoor air quality investigations
- Hospital and healthcare facility monitoring
- Industrial hygiene surveys
- Agricultural and livestock facility assessments
- Wastewater treatment plant monitoring
- Research on airborne pathogen transmission
Unlike real-time electronic particle counters, the Andersen sampler imparts pathogens on petri dishes, which require incubation. This allows for precise identification and quantification of viable microorganisms in the sampled air.