Coronavirus: effectiveness of types of masks and manufacture of a homemade respiratory mask

[Christophe]

An infox * that I had missed: the looping of CO2 from respiratory masks (FFP essentially, the others do not have enough dead volume to cause a loopback) ...

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* in fact it's a half infox, FranceTV is trying to be smart to restore "the truth" but ... try to play sports with a filter mask (like FFP1) and you will see if you do not miss O2 !! https://mobile.francetvinfo.fr/sante/ma ... 75859.html

By cons when we are drunk it's nice: we recycle free ethanol!

[Christophe]

In the USA the effectiveness of masks is indicated above ...

Only -27% on particles / postillons !!

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After that it looks like a simple fabric mask ...

[Christophe]

They did it :

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[Macro]

An infox * that I had missed: the looping of CO2 from respiratory masks (FFP essentially, the others do not have enough dead volume to cause a loopback) ...

104181119_827612050979959_7549995793926740505_n.jpg

* in fact it's a half infox, FranceTV is trying to be smart to restore "the truth" but ... try to play sports with a filter mask (like FFP1) and you will see if you do not miss O2 !! https://mobile.francetvinfo.fr/sante/ma ... 75859.html

By cons when we are drunk it's nice: we recycle free ethanol!

This is a well-known problem of the types who swim in the tuba .... Too long with a tuba too long and it puts the sheaf .... hence the creation of masks with separate suction discharge circuit. ...

Another problem that I noticed with the mask behind the wheel (compulsory in my profession when passengers in the vehicle) ... The fogging in the glasses .... And the repression of my breath flavored fisherman friend who burns my eyes. ..

[Christophe]

The fog in the glasses? With a surgical?

If it's not proof that it doesn't filter much ...

[Macro]

No with a washable afnor fabric mask ...

[GuyGadebois]

The fog in the glasses? With a surgical?

If it's not proof that it doesn't filter much ...

Yes, it filters but only in a way. Which ? Who knows...

[Christophe]

Surgical or tissue afnor it's kif kif: it's not FPP ... and it lets pass roughly 20 to 30% of the air ... more if you have not tightened it or you breathe more strong ...

[Christophe]

I don't know if it's the right subject but hey ... at least it's not lost in the humor section:

[Christophe]

No with a washable afnor fabric mask ...

How much did you pay it for info ... because I came across it: health-pollution-prevention / the-coronavirus-cons-t16359-1070.html # p405022