3M 6001cn Organic Vapor Respirator Filter Cartridge For 3M 7502 6200 Gas Mask 3M 6001CN organic vapor cartridges using airtight packaging. Surface CleaningThe right to wear will not smell of toxic gases, we recommend that you build the replacement schedule, regular replacement of filter cartridges, filter cartridges, said saturated, replace it immediately when you can smell the toxic fumesWhen cotton filter is dirty, damaged, or if you feel significantly increased breathing resistance, please timely replacement filter cottonNew items may be have a little plastic taste, Please ventilation period.