What is the customer looking for when they ask for HEPA filtration?
In the vacuum industry when the word HEPA is used, it actually refers to a certain level of HEPA filtration. Do the following filtration levels of 99.97% at .1 microns, or 99.97% at .3 microns sound familiar? A very often-asked question is whether or not the filter in a vacuum is a HEPA filter. As long as 85% of the particles .3 microns or smaller, are stopped by the filter, it’s technically a HEPA filter. Most customers say they want a HEPA filter in their vacuum, and assume that means a 99.99% efficiency rate for particles as small as .1 or .3 microns. However by only asking for HEPA filter, it could have an efficiency rate as low as 85% at .3 microns.
