In view of the increasing number of community cases and the emergence of variants that may be more easily transmitted (such as the B1.1617 strain), a recent multi-ministerial working group has emphasized this point.
According to European (EN 14683) and American (ASTM F2100) certifications, the Health Sciences Agency (HSA) has released a list of local manufacturers and mask brands that have obtained HSA approval. The bacterial filtration efficiency (BFE) of these masks reaches 95%. .
Face masks are important to prevent the spread of the virus because they provide “source control” that prevents the wearer’s respiratory droplets from entering the air and spreading to other people.
Especially surgical masks, because they have a water-repellent front layer, they can also prevent others from being exposed to splashes and splashes of infectious substances.
These masks have high filtration efficiency, breathability and reasonable resistance to fluid penetration.
In addition to surgical masks, you can also choose to use reusable masks with at least two to three layers of fabric:
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Post time: May-25-2021