The Bacterial Filtration Efficiency (BFE) test is performed on filtration materials and devices that are designed to provide protection against biological aerosols, such as face masks, surgical gowns, caps, and air filters. The Viral Filtration Efficiency (VFE) test is similar to the BFE test, however tests against a distinct virus used in aerosol form instead … Continue reading Bacterial & Viral Filtration Efficiency (BFE/VFE)