Canister used primarily supporting military and civilian gas masks, mainly toxic gases from the filter NumberColorProtection typeProtection against objectsTest agentTest concentration(mg/l)Volume concentration MP1GreenAll-purpose protectionHydrocyanic acid cyanogen chloride, arsine,chloropicrin, phosgene,benzene, bromomethane, lewisite gas,hydrogen phosphide,etcHCNCLCNHCN:5.6(0.5)CLCN:3.0