Pouch for the blower unit of a powered air purifying respirator

A pouch for the blower unit of a system of purifying respirator motorized air, with the blower unit of a type comprising: (a) an air inlet to which can be connected so as to be removable cartridge filter (b) an air outlet to which can be connected so as to be removable breathing tube of the respirator system, and (c) a blower operable to draw air into the unit through an inlet air and to deliver filtered air to the air outlet; in that the pouch comprises; (I) a main closable opening, through which can be inserted the blower unit into the bag, (ii) an inlet air located to match the air intake blower and to allow connection of the filter cartridge thereto, (iii) an opening of air outlet to match the air outlet of the blower unit and permit the connection of the breathing tube thereto, and (iv) the respective seals for each of said openings; seals configured such that when the bag is closed with the blower unit located inside and connected to the respirator system, the seals inhibit or prevent the passage of particulate or gaseous into the bag through said being openings.