HEPA (High Efficiency Particulate Air) filters are used in Local Exhaust Ventilation (LEV) systems to capture hazardous airborne particles before the air is discharged or recirculated.
HSE guidance HSG258 emphasises that extracted air returned to the workplace must be thoroughly cleaned. Armstrong Environmental provides independent in-situ HEPA filter integrity testing to identify leakage through filter media, seals and housings, helping duty holders verify the integrity of their installed filtration systems.
In-situ HEPA filter integrity testing assesses the installed filtration system to identify potential leakage paths that could compromise filtration performance.
Using a controlled aerosol challenge and specialist photometer equipment, our LEV Specialists assess the integrity of the installation against specified acceptance criteria.
Where filters are accessible, our specialists use an aerosol challenge and scanning probe to identify localised leakage through filter media, seals and surrounding installation components.
Filter specification, classification and intended application.
We review the test findings, filter classification and available system information, providing a clear report identifying the results, acceptance criteria and any defects or recommendations.
Filter specification, classification and intended application.
Filter installation, condition, seals and housings.
Installed filter leakage testing using appropriate aerosol challenge methods.
Detailed technical report including findings, professional judgement and recommendations.
