Stadium Masks

What's the difference between N95 and KN95 masks?

What's the difference between N95 and KN95 masks?

A commonly asked question.

The attached table demonstrates how the two respirators have nearly identical testing standards.  One standard is American (NIOSH) the other is Chinese (GBP)

Breaking down the table:

Filter performance refers to the reduction in concentration various aerosols in the air that pass through the filter

Test Agent refers to the aerosol that is used for the test, in this case, Salt Water (NaCl)

Total inward leakage is the amount of aerosol that enters the facepiece after 3 minutes in a test chamber.

Pressure Drop is the resistance air is subjected to as it moves through the respirator filter.