World News – GB – Coronavirus: what you need to know about choosing a face mask


These advertisements allow local businesses to present themselves in front of their target audience – the local community

It is important that we continue to promote these ads as our local businesses need as much support as possible during these difficult times

Which? has conducted extensive testing of face masks that are on the market and raised concerns about the effectiveness of some The consumer organization has outlined what consumers should look for

It should be noted that the coronavirus particles can be much smaller (as little as 01 micrometers in diameter), so what we are measuring is not the ability of the facial covering to protect against the coronavirus, per se.

READ MORE: ‘Alarming’ – New tests raise concerns about the effectiveness of some Covid-19 masks

Face shields are not medical devices and are not designed to block all particles down to these ultra-fine particles, like a premium medical respirator mask would.

Like basic disposable surgical masks, they are intended to help block larger droplets and aerosols emitted by the wearer, which may be asymptomatic, helping to create community protection by minimizing the exhalation of viral particles.

While disposable surgical masks must meet strict filtration standards to be sold, there is no such binding standard for reusable fabric masks. However, surgical masks are single-use, non-recyclable products, so not really a practical solution for sustained daily use They could also have a serious impact on the environment if millions of people end up in landfill

At around 45p per mask, the cost of using just one disposable product per day over the course of a year could be £ 164 – much more than Which? S Best Buy reusable face covers, which ship in packs of 3 for £ 15

Try to choose three coats, but at least two – our tests have shown a clear difference between single coat face coatings and double or triple coat ones

Choose your material wisely – tightly woven cotton is a good option – the homemade mask we tested performed well on filtration – and the worst performing masks were single ply mostly polyester Ideally a mix of different fabrics such as cotton, polypropylene and various kinds of polyester

Make sure it is adjustable or comes in different sizes – our testers rated the face coverings above for fit and comfort when adjustable, either by the earrings and thread moldable nasal, either because the mask was in different sizes To learn more, see our buying guide for face masks

To achieve bacterial filtration, which one? used an aerosol generator to project bacterial particles 3 microns in diameter onto sections of mask fabric and see what percentage of bacteria had passed through

To test breathability Which one? measured the pressure required to draw air through each of the liners at a rate of eight liters per minute, which is two liters above the mean breathing volume

To find out how well the masks would last with repeated use, testers put the masks on and off 80 times, and to understand how comfortable the face covering is, testers with different face shapes were asked to rate the ‘fit – looking for tightness, gaps and ease of adjustment

Which? also look for comfort while wearing and talking, and for spectacle wearers – if that has fogged them up

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News from the world – GB – Coronavirus: what you need to know about choosing a face mask
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