RE: topped up23 Oct 2020 11:52
18 Sept RNS
"Conventional surgical type masks typically comprise of three layers, with the inner layer acting as a physical barrier to viruses and bacteria. However, they are only recommended for up to two hours of continual use as this layer can become moist and fail, thereby allowing the virus to penetrate though."
23 Oct RNS
"These tests confirmed that the coated face mask textile displayed high virucidal activity, meeting the requirements for ISO 18184 certification with more than a 90% kill rate for up to 7 hours, while being benign to healthy mammalian cells (ISO 18184 is the international anti-viral textile standard that measures virucidal antimicrobial activity on textiles and other porous materials)."
So anti-viral activity aside this mask lasts 3.5 times as long as the ones they use now before needing to be replaced.