Mask project update: Lots of progress today. We've nailed down the acceptable filter material (1mm sheets of a meltblown thermoplastic called polypropylene, if you were wondering). We're working on a low-cost/easy-to-produce design, much to be improved vs 3M N95 models.https://twitter.com/mattparlmer/status/1239049398778310658 …
-
Show this thread
-
Replying to @mattparlmer
Can you say more about the filter material? I don't know the proper term but what are the particulate catch rates for different sized particles?
2 replies 0 retweets 1 like -
Replying to @_StevenFan
Sure. It's in the name, N means "not oil filtering" and 95 means "95% filtration efficiency"
2 replies 0 retweets 1 like -
Replying to @mattparlmer
What is the filtration rating of the polypropylene?
1 reply 0 retweets 0 likes -
Replying to @mattparlmer
You've probably seen this already, but if you haven't it has authoritative information about PPE that might interest you. https://www.cdc.gov/coronavirus/2019-ncov/infection-control/control-recommendations.html …
11:11 AM - 16 Mar 2020
0 replies
0 retweets
1 like
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.


"Nasty little Buddhist"
Seeking via neuroscience and psychology informed dharma.