The Nano material for this mask has been tested with any different bacterias and viruses in the past many years, all the test datas in the reports showing that this material has very strong abilities for antivirus.

In the situation of when the whole world is under attack of corona virus, Riku Mask does not get involved in crazy and messy business for normal mask, we insist not to make any profit by selling low quantity facemask, we pursue high quality at a high standard and we aim at finding out the best solution for antiviral mask. In the process of research and development, we have given up silver ion and cupric ion, now we got much more better solution than silver ion and cupric ion, the best solution at this stage we figure out is the nano material of what we apply to facemask now. You can be convinced by the test datas in the test report.

Test Report & Certificates
Basic Material Science Study in Japan