3M: 6001: Organic Vapor 6002: Acid Gases 6003:Organic Vapor/Acid Gases 60921: Organic/Acid/Particulate
NIOSH approved against certain Organic vapors or Acid gases or both. Also a organic/acid w/P100 particulate filter. Use with 3M Half and Full Face pieces 6000,7000, and FF-400 series with bayonet filter