MONTREAL – FPInnovations, a Canadian research centre, has successfully completed phase 1 in the development of biodegradable disposable face masks, and is ready to begin the second phase which is expected to lead to an entirely made-in-Canada biodegradable solution for face coverings. …with financial support from Natural Resources Canada, FPInnovations quickly completed the first phase and successfully developed a biodegradable cellulosic filter media. The cellulosic filter media is the middle layer of a three-layer mask, is made from sustainable wood fibres, and is suitable for single-use face masks for public use. Current single-use personal masks are made from petroleum-based plastics. The average filtration efficiency of this new cellulosic filter media is currently at 60%, surpassing the average filtration efficiency of a typical cloth mask which is approximately 30%. …The existing Canadian pulp and paper industry could meet the mask procurement needs of Canada within weeks