Selection Requirements to Establish
Work through what you can. Anything still undecided is exactly what a conversation with our engineers is for.
01The test and the standard
- Test being performed: filter integrity, efficiency, leak scan, airflow verification
- Standard or guideline that defines the method
- Whether the test is in production, in a laboratory or on an installed system
- Pass criteria the result is judged against
02Aerosol and challenge
- Aerosol medium (DEHS, PAO, oil, salt) and particle size distribution
- Challenge concentration required upstream
- Generator output needed for the duct or hood volume
- Neutralisation, dilution or conditioning in the aerosol path
- Whether monodisperse or polydisperse aerosol is required
03Airflow and measurement
- Volumetric flow rate, and duct, hood or housing dimensions
- Face velocity and uniformity requirements
- Upstream and downstream sampling arrangement
- Photometer, particle counter, or both
- Penetration or efficiency figures to be reported, and the record format