The pear shaped heavy wall flask are usually used for small-scale distillations. The pear shape allows recovery of more material than the same-scale round-bottomed flasks. Laboy glass flasks are heavy wall designed, made by hand-blowing to ensure uniform wall thickness, made of high-quality borosilicate glass and annealed at 800 degree Celsius, can be heated directly in an open flame and can withstand typical laboratory thermal variations in Chemistry processes like heating and cooling.
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