There are two primary types of air filters used in BSCs: Hepa (High Efficiency Particulate Air), and ULPA, (Ultra-Low Particulate Air). Understanding the similarities and differences between HEPA and ULPA aids in selecting the filter which offers the best combination of performance and capability for the specific needs of an organization.
Pharmaceutical Online has a useful article on this subject relating to safety cabinets, the article can be accessed here: Filters
Posted by Dr. Tim Sandle
