2 ms·
It's the minimum standard, really. Most reputable N95s seem to hit over 99% in real tests.
by rootusrootus 5y ago
It's the minimum standard, really. Most reputable N95s seem to hit over 99% in real tests.
- jve 5y agoThis was lately on HN, so you can check yourself: https://www.armbrustusa.com/pages/mask-testing https://www.armbrustusa.com/pages/mask-testing