@RoadsidePicnic

Inside car all such things are totally useless. As you'll inhale all stuff well before it will filter anything (also it filters mostly air around itself).

Interesting talk considering masks and face recognition

I accidentally talked with pro in face recognition (he is among leading authors of algorithms and software is used very widely by authorities).

He told that around 2-3 years ago authorities in many countries (where they did not care) suddenly started asking test results on sets of videos and photos where lot of people with surgical masks are present. So algorithm must keep very good recognition rate and low false positives for such samples. It was not very hard thing as Japan, China and few other countries always focused on good recognition of people in surgical masks.

Some authorities also asked them to do tests on sets where people had 3M half masks and hard formed 3M respirators. Absolute worst results showed half masks, from some angles and in some circumstances algorithms still work quite nice but number of errors and false positives go through the roof (for mass surveillance it is not am option) . Formed respirators are also quite bad, around 10-15 times worst results compared to surgical masks that mostly follow the face outline.

Here we can actually can see why exactly governments do not want you to even consider half masks.

@zcream

Wearing such mask first requires that you know that such thing exist.

I made small survey - 99% of people have no idea. As all media at best talk about cheap surgical masks.

And such mask is actually much cheaper (as one set of filters lasts around 4 months in normal air quality).

@zcream

In India , people don't care about dust mask. No one wears this stuff

It is big amount of good people in India.

Unfortunately most people do not think with their own brain, they use herd instincts (do as people around).

And this is why millions of good people in India will die.

In India , people don't care about dust mask. No one wears this stuff

@kurth

Sometimes it is better to shut up than to post.

For sane people - I used it for 5 weeks where day had been above 30 degrees, 2 weeks above 35 degrees in shade. For many hours a day. Little less temperatures than New Delhi average month, but very close and hot.

Such masks are used for 6-10 hours a day on all demanding construction sites, insiding India, Texas and so on.

3M 6502 QL, mask that I use

Make sure to measure your face - see post one in topic.

Link to proper filters in post above.

https://www.aliexpress.com/item/4000896167602.html

another listing, more expensive

https://www.aliexpress.com/item/32815126993.html

@kurth

I am not fan of gloves thing (as if you wear all stuff you wont bring virus into mouth :-) ), more fan of washing hands.

A new study and online simulation tool shows that America could end the lockdowns and beat the coronavirus in a matter of weeks if just 80% of people wore masks in public. Yes, it’s that simple: Wear a mask and you beat the virus.

Most of the anti-mask people fail to realize they are repeating CDC propaganda from February of this year, when the CDC claimed masks didn’t work, as a strategy to make sure government agencies and hospitals could hoard the mask supplies by preventing the public from realizing masks are effective.

https://www.naturalnews.com/2020-05-10-lockdowns-could-be-ended-now-wear-a-mask.html

Remember all statistical simulations are useless for your personal case, even if using cheap masks help extremely in general in your specific case wearing bad mask/respirator can lead to your personal tragedy.

In other words - if you wear cheap bad mask you still helping stop the virus, but your life can be part of this stopping process.

So, only silicone multiuse mask + good closed P3 filters are almost 100% warranty that you won't get it in your lungs. Of course you can get it still if someone at your home or where you also remain without protection have it.

Cheap safety goggles are a 1000x better than shields. In mex, people are going crazy with homemade shields. As well, many big outbreaks here in hospitals with under protected medical staff...even violent protests by staff. Most reduced to cheap cloth masks. Mex made big mask purchases from china....landed , unloaded, shipped to hospitals...never seen again !

Was he only wearing that mask? Medical professionals in USA are wearing face guards in addition to the medical masks. Some have complained about having only blue masks and not n95 masks. Quite a few med professionals have become sick with covid, so i wonder where the PPE failures occured.

Alright, to be clear, I do not condone improper usage of respirators, and advise anybody reading to learn, understand, and follow proper procedures and protocols for applying and using any respirator or mask.

I personally shave, yes, but I'm just relating my experience with the face-shield mask in the past. The hazards at my job are typically not that bad, more of a nuisance in most cases, although there are definite acute and chronic inhalation hazards. Even with the imperfect seal, I would rate it better than any N95 mask for filtration. I don't think incidental covid contact is resilient enough to easily bypass a medical mask, but more protection and proper use, as you underscore, is always better.