3 ms·
"surgical tape secured over the valve from the inside of the FFR can provide source control similar to that of an FFR with no exhalation valve." Well... yeah?
by kbelder 6y ago
"surgical tape secured over the valve from the inside of the FFR can provide source control similar to that of an FFR with no exhalation valve."
Well... yeah?
- pauljurczak 6y agoA piece of duct tape works even better for source control...
- SkyPuncher 6y agoI think you're under estimating how hard it is to actually get a proper seal with a piece of tape. The valved n95s I've seen are a bit fuzzy. You can certainly block most airflow, but there's still a small path at the intersection of the tape and mask that can't be properly sealed. For the layperson, that's fine. For a scientific study, that's a problem.