Sanko Chemical Industry Dust Mask Silky Mask DF640N (Active) DF640N 10 pieces

Catalog number: DF640N Features: ●An eco-friendly mask that does not use metal parts. ●The strings have a hook-type fastener that allows you to adjust the length, and the loop type makes it easy to put on and take off the mask. ●The shape of the nose area has been streamlined so that it can be used with goggles or protective glasses. Specifications: ●Size: One size fits all ●Height (mm): 125 ●Width (mm): 138 ●Particle collection efficiency (%): 99.5 ●Usage time limit: 13 ●Inhalation resistance (Pa): 34 ●Exhaust resistance (Pa): 33 ●National certification number: No. TM558 ●National certification DS2 approved product (No. TM558) ●Contains activated carbon ●Head-hanging type ●No exhaust valve ●Can be used with glasses and masks