3M 9913 Nuisance Odour Respirator (box 20) 9913 FFP1 Description : Speciality Respirator - Relief from nuisance levels of organic vapours and respiratory protection against fine dusts. Relieves irritation: designed to offer relief from the irritation of low levels of specific gases and vapours, often present alongside particulate hazards. Reliable, effective protection against fine particulates. Activated carbon layer provides relief from low levels of specific gases and vapours. 3M 9913 conform to standard: EN149:2001 FFP1. Approval: CE Marked. Maximum use level: Below OEL for Organic vapours. Particulates; Assigned Protection Factor: 4 x OEL (Nominal Protection Factor 4 x OEL).