https://www.purdue.edu/newsroom/archive/releases/2020/Q2/new-approach-to-extend-shelf-life-for-n95-mask.html
New approach to extend shelf life for N95 mask - Purdue University News
A Purdue University team has come up with an approach to extend the shelf life for an N95 mask, which is one of the pieces of personal protective equipment...
extend shelf lifenew approach