Testing finds 'alarming flaws' in effectiveness of popular face masks
Some of the most popular face masks on the market have 'alarming flaws', tests show, with the worst only trapping a third of bacterial particles. Consumer group Which? tested a range of popular brands and styles of face coverings and masks for how well they filtered particles, how breathable they were, and how they fared after multiple washes. The watchdog found that the best performing face covering was able to block more than 99% of potentially harmful bacterial particles, filtering just as well as a disposable mask, but the worst product only stopped a third of the particles passing throug...