wa7iut, 5 months ago

@trendless so using my beard as a secondary pre-filter is probably not a good idea

trendless, 5 months ago

@wa7iut 😂🤣

Well, I guess it depends what size of particulates you're pre-(post?)filtering. It'd work well for crumbs 👌

wa7iut, 5 months ago

@trendless I think that’s about it. I may need to shave! 😱

trendless, 5 months ago

@wa7iut not necessarily; there's something called the singh thattha technique that allows a seal to be achieved with a beard: https://pubmed.ncbi.nlm.nih.gov/33022336/

wa7iut, 5 months ago

@trendless Thanks! I'll study that. Last winter I just went commando. This may save my beard!

We've continued over the past few years to mask up in our office w/ N-95 or Sonovia's version, which is probably not quite N95

trendless, 5 months ago

@wa7iut Np!

That's awesome, I'm glad you've been able to do that! The exact level of filtration is usually less important than how well they fit to the face. Leaks let so much more in than less-than-perfect filtration material -- some experts have even highlighted that the aerosols we exhale are bigger and slower than what NIOSH uses in their testing, thus are caught much more readily. And with the el cheapo DIY ways of fit testing, it's really easy to get an idea of how well any given mask seals. Really blew my mind the first time I did it. Showed me which ones fit my face best and gave me a lot of confidence wearing them.