HEPA filters are used in biosafety cabinets to:
HEPA, High Efficiency Particulate Air filter, is fibrous mat of randomly arranged borosilicate fibers that captures airborne particles via interception, inertial impaction, and Brownian diffusion. In Class II biosafety cabinets, laminar flow hoods and CO2 incubators, HEPA filters provide 99.97% efficiency for most penetrating particle size of 0.3 micrometer, with even higher capture for smaller and larger particles including bacteria, fungal spores, dust and aerosolized cell fragments. In BSC, intake and exhaust HEPA filters deliver product protection for cultures and personnel protection by f
Ref: Lodish et al. Molecular Cell Biology 8th Ed Chapter 9 Cell Culture Methods; NSF/ANSI 49 Biosafety Cabinetry: HEPA filtration 99.97% at 0.3 µm.
