4 ms·
AFAIK some filters are mechanical and others require the electrosatic charge to reach their stated performance. Half-masks or full face masks are typically of t
by blub 5y ago
AFAIK some filters are mechanical and others require the electrosatic charge to reach their stated performance. Half-masks or full face masks are typically of the former kind, while smaller masks of the latter kind.
- mindslight 5y agoThe 2297 and 2097 filters (at least) are made with electrostatic media. The 2297 touts "Advanced Electret Media" for easier breathing.