title: A safe and easy method for removing osmium tetroxide (OsO4) crystals from glass ampules.
mesh_terms: D002621:Chemistry / Q000379:methods*; D004349:Drug Packaging; D005615:Freezing; D009992:Osmium; D009993:Osmium Tetroxide
chemical_list: D009992:Osmium; D009993:Osmium Tetroxide