Medical mask from nonwoven materials non-sterile,

The mask is designed to limit the transmission and spread of infectious agents, as well as to filter the breathing air and provide a barrier to the transmission of droplets and particles from person to person. The medical mask is made of three layers. The size of the product: "Standard" length 17,5 ± 1,5 cm and width 9,5 ± 0,5 cm.

The mass of the mask should be, g: Standard 2,5 ± 0,8. The total length of one loop without tension shall be: "Standard - (16 ± 3) cm. Surface density of nonwoven material shall be: Spunbond - (12±3) g/m2, (17±3) g/m2; Meltblown - (22±6) g/m2.

Differential pressure < 29.4 Pa/cm2. Bacterial filtration efficiency? 95%.

The microbiological purity of the mask should be, CFU/g? 30.