The lightweight 3M 2128 P2R (nuisance level organic vapour and acid gas) particulate filters offer: • Low breathing resistance. • A bayonet fitting system to ensure precise and safe locking. • Versatility: can be used on all 3M 6000, 7000 and 7500 Series of Half Masks and Full Face Masks. • Maximum use concentration: 10xWEL • Conforms to 2128