What do the different filter ratings mean? HEPA, MERV, 95%…?
Filters are rated on their efficiency to stop and trap particulate of a particular size. Most filters used in Ace extractors base their efficiency rating on stopping particulate of 5 microns or greater. A micron is 1/25,400th of an inch in diameter, and most carbon steel welding particulate is approximately 5% microns in size. So …
What do the different filter ratings mean? HEPA, MERV, 95%…? Read More »
