title: Loss of vacuum in rubber stoppered vials stored in a liquid nitrogen vapor phase freezer.
mesh_terms: D001274:Atmospheric Pressure; D005612:Freeze Drying; D005615:Freezing; D009584:Nitrogen; D013048:Specimen Handling / Q000295:instrumentation*; D013696:Temperature; D014618:Vacuum
chemical_list: D009584:Nitrogen