Heat and boil liquids in boiling flasks that are designed to have round bodies with long, thin necks to facilitate uniform heat distribution and minimize evaporation. Typically made of borosilicate glass, which is resistant to thermal shock and chemicals, boiling flasks are available in two styles: rounded or conical bottoms, which need support to stand upright, or flat bottoms, which can stand alone. Conduct a wide range of demanding applications with Thermo Scientific™ Nalgene™ Erlenmeyer Flasks made with Teflon™ FEP with ETFE Closure, which can withstand temperatures from