title: Respirator cartridge efficiency studies. I. Experimental design.
mesh_terms: D000641:Ammonia; D001272:Atmosphere; D004391:Dust; D005740:Gases; D006813:Humidity; D008397:Masks; D009787:Occupational Medicine; D012119:Respiration; D013696:Temperature; D014937:Work
chemical_list: D004391:Dust; D005740:Gases; D000641:Ammonia