round-bottom flask

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Noun1.round-bottom flask - a spherical flask with a narrow neck
flask - bottle that has a narrow neck
References in periodicals archive ?
Three samples of 10 mg curcumin in 25 mL water were prepared in 50 mL round-bottom flasks with magnetic stirrers.
The system is compatible with a wide selection of sample holders, enabling evaporation from most common sample container formats, including round-bottom flasks up to 500 mi., tubes up to 160-mm long, custom reaction blocks, as well as shallow-and deep-well microplates.
heat-resistant round-bottom flasks with a 250 ml thin section.