Maybe not such a good idea: https://www.youtube.com/watch?v=qiYbXsIcI7E
On 05/04/2020 00:35, Terry Blanton wrote:
I found an old Hoover HEPA vacuum bag and thought to make a mask. Then I Googled the idea. Nothing new under the sun. HEPA spec is 300 nm but test show them effective down to 50 nm (depends on the rating). SARS-CoV-2 is 125 nm.https://youtu.be/W6d3twpHwis
