What type of filter is capable of removing 99.97% of airborne particles?

A HEPA filter, which stands for High-Efficiency Particulate Air filter, is specifically designed to trap a significant percentage of airborne particles. It can capture 99.97% of particles that are 0.3 microns in size and larger. This includes a wide range of pollutants such as dust, pollen, mold spores, and pet dander, making it highly effective for improving air quality. The design of HEPA filters allows them to provide a high level of filtration efficiency while maintaining airflow, which is why they are widely used in various settings including hospitals, laboratories, and homes for allergy and asthma management.

The effectiveness of HEPA filters sets them apart from other types of filters. For example, activated carbon filters are more focused on removing odors and gases rather than small particulate matter. Standard air filters typically have a lower filtration efficiency and may not be able to trap very small particles effectively. Fiberglass filters, though useful for protecting HVAC systems, do not provide the same level of filtration as HEPA filters, allowing many small pollutants to pass through. Therefore, when it comes to removing a high percentage of airborne particles, the HEPA filter is the recognized standard.