3m 8300 series particulate respirators 3m 70071534070 the 3m8482 8300 series of respirators has been designed to suit workers in environments requiring masks to be worn for prolonged periods these particulate respirators offer a cushioned inner lining to fit snugly to the face and an m noseclip making them easier to mould around the nose a real blessing in a hard industrial environment this valved ffp2 respirator is suitable for use where there is moderate level fine dust or oil or wa