Here is a breakdown of what an N95 masks is:
N: This is a Respirator Rating Letter Class. It stands for “Non-Oil” that means that if no oil-based particulates are present, then you can use the mask inside the work surroundings. Other mask ratings are R (proof against oil for 8 hours) and P (oil proof).
95: Masks ending in a 95, have a 95 percentage performance. Masks ending in a 99 have a ninety nine percentage performance. n95 mask Masks finishing in 100 are 99.97 percent green and that is the same as a HEPA high-quality filter out.
.Three microns: The masks filter contaminants like dusts, mists and fumes. The minimal size of .3 microns of particulates and big droplets received’t pass thru the barrier, consistent with the Centers for Disease Control and Prevention (CDC.)
Material: The filtration cloth at the masks is an electrostatic non-woven polypropylene fiber.
Valve: Some disposable N95 masks come with an non-obligatory exhalation valve. “The presence of an exhalation valve reduces exhalation resistance, which makes it less difficult to breathe (exhale,)” consistent with the CDC.