Product Specification Product Name:HMF-YJ001 Disposable breathing fiter(lung function) Caliber: Machine side.16*17mm interface Patient side:F22/M15 interface(in line withYY104001-2015/S53651-2004) Particle size of the flter:0.5um of the particiesmicroorganisms and viruses Filtration efficiency: Non-woven and needied cotton99.9%