Non-woven masks which passed filtering performance ... "One way is to ask others to check the gaps between the mask and their face.” ...

The Bureau of Indian Standards under the health ministry issues guidelines for face mask standards, mainly focussing on N95 about specific raw materials like non-woven polypropylene, which helps ...

A simple trick can reveal whether your face mask offers sufficient protection ... Disposable surgical masks are also made of non-woven fabric. A 2013 study found that surgical masks were about ...