Mask filter with electric fan BRD-7 (for dust mask BL-100H, BL-200H, BL-700HA) (Koken) The filter is made by integrally forming
ultra-fine diameter glass fibers into round pleated paper making, resulting in high collection efficiency and long An alpha ring filter that allows the use of time. By adding advanced processing technology to this alpha ring filter, we have expanded the filtration area to a maximum of about 12 times the bottom area, enabling even higher collection efficiency and longer use.
All of the alpha ring filters have been treated to be water-repellent since the beginning of development, so even if liquids such as mist and moisture adhere to them, it will not be difficult to breathe, and they are also effective against mist and oil mist. . There are also products that have undergone flame-retardant processing against spatter sparks.