Mask N95

Text in image:
Image for note The Most Effective Cloth for DIY Masks
Filters 100% of big particles and 95% of small particles.
This table describes what percantage of big and small particles a piece of cloth can stop
|
Name |
Image |
Big |
Small |
|
Surgeon mask |
100% |
70% |
|
|
Kitchen paper towels* |
96% |
33% |
|
|
Jeans |
90% |
30% |
|
|
Bed-sheet** |
90% |
24% |
|
|
Bra pad |
76% |
14% |
|
|
T-shirt*** |
70% |
15% |
* - 2 layers of kitchen paper towels under common mask
** - 4 layers of 100% cotton bed-sheet or pillow-case
*** - 2 layers of T-shirt cloth
Any mask is better than nothing.
How to test is your mask good?
1) You need to breeze freely in it.
2) Loot at the light through your mask - the less you see, the better.
Source: https://health.tut.by/amp/news/medical_news/682202.html