Singapore scientists develop reusable mask able to filter 99.9% of bacteria, viruses and haze

Associate Professor Liu Zheng (left) holding the nanotech mask with Professor Lam Yeng Ming holding the copper nanoparticles in a bottle. - NTU

SINGAPORE (The Straits Times/ANN): Scientists from the Nanyang Technological University (NTU) have developed a reusable mask that is able to kill bacteria droplets within 45 seconds and filter 99.9 per cent of bacteria, viruses and haze particles - better than the medical-grade N95 masks used in hospitals.

N95 masks are able to prevent around 95 per cent of aerosolised droplets and particulate matter of around 0.3 microns in size from entering them.