title: Discoloration and impurities in isoflurane vaporizer.
mesh_terms: D004340:Drug Contamination; D007530:Isoflurane / Q000032:analysis*; D008738:Methyl Ethers / Q000032:analysis*; D009330:Nebulizers and Vaporizers
chemical_list: D008738:Methyl Ethers; D007530:Isoflurane