The table below shows the results of different mask materials tested by TSI, Inc using a TSI 8130a test machine². This instrument is the gold standard in filtration media testing. The TSI 8130a is used by NIOSH to certify N95 respirators (42 CFR Part 84) and by respirator manufacturers around the world to test their products.
Nicole Alderman wrote:Cristo, do you perchance have a link to the study/article? I want to share it with my friends. Thanks!
Anne Miller wrote:I have heard that medical workers and medical facilities are running out of face masks. I have decided that now is a good time to make some and thought that I would share what information that I have found.
How to make a face mask articles:
I like the red one in the picture though I am looking for the protection that layers might offer. Here are some templets that I found:
This information is from the first article that I posted:
A vacuum cleaner bag was considered the most formidable household material with a rate of nearly 86 percent protection against the smallest particles tested. Falling behind was a standard dish towel at nearly 73 percent; a cotton-blend T-shirt at 70 percent; and an antimicrobial pillowcase at 68 percent.
They also tested how doubling up on the material could help. In the case of dish towels, two layers showed a notable increase in filtration rate — a 14 percent jump for particles of 1 micron in size — although the same level of increased benefits could not be said for cotton shirts or pillowcases.
Now to get started! Any suggestions?
I have a fried who is reliant on the bus system. There are signs asking people to wear masks on the bus, and she says that about 75% are doing so. However, she has also noticed that they are becoming a fashion statement. Just like people can make a statement with the colour, pattern or style of trousers, she's seeing the same with masks. My friend bought one with cat's whiskers, nose and mouth printed on it even though it doesn't fit as nicely as the two I sewed her, just because she loves cats and thought it would make people smile!
ray Bunbury wrote:Wearing masks is like wearing trousers (or short or skirt) on a hot day - not the most comfortable, but it makes other people feel better.
If they are cotton bandanas, they'd make fine fabric for making a set of either the pleated masks or the shaped masks, and with some pipecleaner or other wire across the top, they'd be far more comfortable. I recommend people have at least two, as I find it more comfortable to be able to remove one after a maximum of 2 hours as the humidity builds up in them.
D. Logan wrote:When all of this hit and masks were so hard to get, I remember taking a number of bandanas and using them as shown in the video below.