Tri-Mer Corp., Owosso, Mich., re-leased a catalog describing applications and operations of its air pollution control system, including the CCSR for submicron particulate. Included are new developments in packed bed scrubbers for NO-NO2 control, incincerator scrubbers and dust collection. Detailed information regarding scrubber technology for acid and fumes, including Tri-Mer Crossflow Scrubber, is featured, together with scrubbers for emergency use.