Whereby uniform 03 micron particles are sent through the filter to test the efficiency. It is hoped that the portable hepa filters can increase the effective air change rate for. Portable Isolation Room Filtration System Cleanroom Filters The solution our air purifiers offer improved air quality for hospitals labs and healthcare clinics by using a proven multi stage filtration technology against high concentrations of chemicals gases odors particles and biological contaminants. Portable hepa air filter for hospitals . In hospitals and health care facilities hepa filtration is a powerful weapon against the particulates and biological contaminants that can harm or even kill patients. Similar to building filtration here is no direct clinical evidence of the benefit of portable air cleaners for reducing infectious disease risk but some benefit can be reasonably inferred for appropriately sized eg their removal rate is appropriate for the room mai...