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Description
This test was conducted to compare the performance of filters made from paper towels. It is these filters that I use in my homemade respirators and masks.
Three different factory masks and a two-layer paper towel filter participated in this experiment.
In the experiment, a machine simulating human sneezing was used. This machine runs on compressed air and provides stable experiment parameters. Air pressure 4 atmospheres. The speed of the airborne stream near the nozzle reaches 80 mph.
![](https://s2.save4k.ru/pic/jvFaBnuFP8M/maxresdefault.jpg)