Face masks
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2hats
Dust.
Confirming my suspicion that you had to dress like a bank robber for optimum effect... Research finds that the filtration efficiency of a 'consumer grade' surgical procedure mask (FRSM, A) can be greatly improved by putting a stocking over your head (F), amongst other DIY approaches that they experimented with.
jamanetwork.com
Evaluation of Cloth Masks and Modified Procedure Masks as Personal Protective Equipment
This comparative study examines the fitted filtration efficiency of 7 consumer-grade face masks and 5 medical procedure mask modifications.
jamanetwork.com
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Doctor Carrot
Marxist Henchman
Just quickly popped into work to get a drink. In there is a customer who I told only last night that he needs to wear a mask - no mask. The people spreading it just don't give a fuck do they? This is why the public is being blamed for it now and not the government. This is the sort of shit that gets focussed on, laser like.
FridgeMagnet
Administrator
I got some KN95s through today and tried one out - much better seal all around but particularly at the top, which means my glasses don't steam up. Can definitely recommend to anyone with the same problem, on top of them being more effective than the blue ones of course. (I don't have the precise figures but I would guess that "walking in front of a car because you can't see where you're going" carries a higher risk of serious harm than even catching covid.)
Boudicca
Seaside Queen
Bavaria makes FFP2 masks compulsory in shops and on public transport.
I bought some of these on zora 's recommendation and wore one to Tesco today.
I bought some of these on zora 's recommendation and wore one to Tesco today.
2hats
Dust.
Making a mask fitter - here a Badger Seal - for a medical procedure mask/FRSM greatly improves filtration efficiency by sealing it more thoroughly against the face.
Practical details:
making.engr.wisc.edu
DOI: 10.1101/2020.12.31.20249101
Practical details:
Badger Seal (Mask Fitter, Mask Sealer, Mask Brace)
What is the Badger Seal (mask fitter)? A soft, flexible and adjustable “frame” that significantly improves the outer seal of a mask. Why use it? Increase filtration performance: Adding the Badger Seal to a 3-ply disposable mask reduces the effective particle penetration by typically 15x (see...
making.engr.wisc.edu
weepiper
I fix the machines that fight climate change
Has anyone got an eBay recommendation for good quality N95 masks? Looks like Scotland is considering making them mandatory in shops and public transport. I had already been thinking about getting some but there's millions of different ones on eBay and I don't know which ones are legit. I see those ones on Wiggle that someone (sorry can't remember who) posted above but I'd rather get a single one or two or three to try first before spunking £42 on 20 of them iyswim.
I have been using these PurifyLabs FFP2 face masks, and they seem alright.
But someone else I recommended them to has just discovered a fraudulent order for other Lloyds pharmacy products for £400 on his card after buying them, so I feel the need to give this caveat!
But someone else I recommended them to has just discovered a fraudulent order for other Lloyds pharmacy products for £400 on his card after buying them, so I feel the need to give this caveat!
muscovyduck
Good IT skills and food hygiene competent
I got mine from Lloyd's online, feel like the best way to make sure they're legit is to buy from a UK high street drug store/pharmacy brand?
weepiper
I fix the machines that fight climate change
platinumsage
HaveMyPassword123
May as well bling it up I suppose:
sideboob
Well-Known Member
I was trying to find that video of the health care worker showing how wearing a mask doesn`t affect your breathing. I`ve got bad lungs, and when I put on a mask and hook up my pulse ox sensor I watch my oxygen saturation slowly drop. Some days are worse than others, but the higher the humidity the harder it is to breathe for me. I wear a mask as much as I can, and usually carry a bottle of drinking water with me, gives me an excuse to slide the mask down, even if only for a moment.
nyxx
*
What is your mask like?
Do you know what it is made of?
How long ish before the oxi reading drops?
There might be something more suitable out there, eg, more breathable, lining which wicks away moisture. I’m trying to achieve the latter right now. Cotton eg is great for absorbency but it is slow to dry out. (So far I’ve been swapping masks when the lining gets damp but I’m looking for something that performs better.)
Do you know what it is made of?
How long ish before the oxi reading drops?
There might be something more suitable out there, eg, more breathable, lining which wicks away moisture. I’m trying to achieve the latter right now. Cotton eg is great for absorbency but it is slow to dry out. (So far I’ve been swapping masks when the lining gets damp but I’m looking for something that performs better.)
gentlegreen
I hummus, therefore I am ...
What is the reading ?
crossthebreeze
Well-Known Member
Some good information on making and buying cloth masks here Home | Cloth Masks
Differs a little bit from the WHO guidelines
The spun bond non-woven polypropylene fabric recommended by both for the filter or middle layer is apparently Dipryl or Corovin - used for base-lining upholstery. It can be hot washed but not tumble dried.
I seem to be wearing cloth masks for long periods of time at work and volunteering at the moment, even though I'm avoiding shops. I've got some of the Neqi masks on order from Boots, and also plan to ask my friend to make up some new homemade masks, with the Dipryl layer in the middle, and maybe polycotton on the outside and cotton inside - though keeping to pleated, nose wire, and ties behind head - as those masks are the only ones that seem to fit me right so far.
Differs a little bit from the WHO guidelines
The spun bond non-woven polypropylene fabric recommended by both for the filter or middle layer is apparently Dipryl or Corovin - used for base-lining upholstery. It can be hot washed but not tumble dried.
I seem to be wearing cloth masks for long periods of time at work and volunteering at the moment, even though I'm avoiding shops. I've got some of the Neqi masks on order from Boots, and also plan to ask my friend to make up some new homemade masks, with the Dipryl layer in the middle, and maybe polycotton on the outside and cotton inside - though keeping to pleated, nose wire, and ties behind head - as those masks are the only ones that seem to fit me right so far.
Mation
real life adventure worth more than pieces of gold
Is there any information on how N95/FFP2 masks compare to wearing a face covering with a pocket, into which an N95/FFP2 filter can be inserted?
The fit will make a difference, I'd assume, but if the face covering fit was good, would the bread of the mask sandwich have a substantial effect, or the insert/filling be less effective?
The fit will make a difference, I'd assume, but if the face covering fit was good, would the bread of the mask sandwich have a substantial effect, or the insert/filling be less effective?
Supine
Newt Member
N95 is classed as a respirator rather than a mask. The fit is a really important bit of that. Not sure what kind of mask you mean but the important thing is does the air go in and out of the filter itself or around the sides.
Mation
real life adventure worth more than pieces of gold
I was thinking of a homemade face covering that fits tightly and can accommodate a filter. But the outer bits might be cotton, or whatever.
sideboob
Well-Known Member
Disposable mask, filter is polypropylene。 Oxi reading drops depending on humidity and my physical activity; within a minute or 2 I watched it go from 98-95 while resting before I took off the mask. I`ve got "mild" copd though, so ymmv.
Yes, cotton ones are great. My wife made some cotton ones, but like you say once damp are no good, and I`m not sure how effective they are.
If you find anything works better I`d love to hear it, thanks.
platinumsage
HaveMyPassword123
The cotton will let air through more easily than the filter, so you’ll just be breathing around the filter making it completely pointless.
elbows
Well-Known Member
I enjoyed some of the photos in this article:
Mask force: London's five centuries of face coverings
Not a new normal: A brief history of five centuries of face masks.
www.bbc.co.uk
sideboob
Well-Known Member
I go out walking or cycling at night because less people are out. The people I do pass though are all wearing masks, except the fucking joggers. I`m sorry if you`re one of the maskless joggers, but wtf?. I assume you`re jogging because you`re health concious but you don`t wear a mask because fuck everyone else?. So yeah, covid drags on because people are stupid. Less chance of transmission outdoors is the equivalent of pulling out results in less chance of pregnancy. Wear a fucking mask/condom.
no big deal exercising in a mask, selfish. I go jogging and do deadlifts and bench in the gym wearing one. I wear two on the metro.
im having this re-occuring, and quite disconcerting dream, where I'm back home and no one is wearing a mask.
Riklet
procrastinación
Airborme transmission rates of covid outdoors when there are few people around has to be increeeedibly low. Maybe a lot higher in crowds, town centres, busy streets etc but still way way lower than in an enclosed space. I have no stats but it seems pretty clear. 
As I am only walking around the not very busy streets of my town at the mo, not even going in anywhere really... im not bothering to wear a mask. If I lived in a big city I would, or anywhere with a relatively higher number of cases.
Back in December/Jan i was surprised people still didnt bother wearing them outdoors here though (I wasnt going out but did some window peeking)
As I am only walking around the not very busy streets of my town at the mo, not even going in anywhere really... im not bothering to wear a mask. If I lived in a big city I would, or anywhere with a relatively higher number of cases.
Back in December/Jan i was surprised people still didnt bother wearing them outdoors here though (I wasnt going out but did some window peeking)
Do you look sexier in your mask?
I had lunch today with an old friend (so she can get away with this) who informed me I look far sexier with most of my face covered. I went to the bogs and had a look and I'm inclined to agree. I think I've got sexy eyebrows or something. I'm not going to take to wearing it during sex but I think I might keep wearing it during social occasions.
I had lunch today with an old friend (so she can get away with this) who informed me I look far sexier with most of my face covered. I went to the bogs and had a look and I'm inclined to agree. I think I've got sexy eyebrows or something. I'm not going to take to wearing it during sex but I think I might keep wearing it during social occasions.
Apologies if this has been posted before, if this table is correct, it claims even a leaky N95 mask will help more than a cloth mask. The cheap FFP2 masks I use, always leak near the nose.
2hats the time periods listed in this table, are these plausible based on research you've seen?
the table was pulled from this article
2hats the time periods listed in this table, are these plausible based on research you've seen?
the table was pulled from this article
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dessiato
🇪🇸 my spirit is crying for leaving
Apologies if this has been posted before, if thes table is correct, it claims even a leaky N95 mask will help more than a cloth mask. The cheap FFP2 masks I use, always leak near the nose.
2hats the time periods listed in this table, are these plausible based on research you've seen?
the table was pulled from this article
That’s interesting reading. I typically use surgical or cloth masks. I need to rethink this.
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