Quick Answer: The Round Bottom Flask is a borosilicate glass vessel with a spherical body and a narrow neck with a reinforced rim. The round shape spreads heat evenly for boiling, distillation and synthesis.
Last updated: October 2026
Key Features
Low-expansion borosilicate glass
Spherical body spreads stress evenly, including under vacuum
Narrow annealed neck with a reinforced rim
Resists thermal shock and chemical corrosion
Technical Specifications
Specification
Value
Material
Low-expansion borosilicate glass
Body
Spherical
Neck
Narrow, annealed, reinforced rim
About This Product
A round bottom flask is the usual boiling vessel on a chemistry bench, because its curved wall takes heat evenly from all sides. In organic chemistry practicals it holds reaction mixtures during synthesis and serves as the boiling flask in vacuum distillation. Schools, colleges and institutes in Gabon, Albania, Chad, Guinea, Italy and Malta can order the Round Bottom Flask from Educational Instrument.
Frequently Asked Questions
Why is the Round Bottom Flask spherical?
The round body spreads heat evenly and distributes stress uniformly, which suits boiling and work under vacuum.
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