What is the minimum efficiency required for ULPA filters?

ULPA (Ultra Low Penetration Air) filters are designed to capture very small particles with extremely high efficiency. The minimum efficiency requirement for ULPA filters is specified as 99.999% on particles in the range of 0.1 to 0.2 microns. This stringent standard ensures that ULPA filters are capable of removing nearly all particulate matter, including viruses and smaller pollutants, from the air.

This high efficiency is critical in environments where air quality is paramount, such as in clean rooms, hospitals, and semiconductor manufacturing facilities, where even the smallest contaminants can lead to significant problems. By effectively filtering out particles within this size range, ULPA filters provide a superior level of protection against airborne contamination, supporting health and safety standards in sensitive applications.