VEVOR Round Bottom Flask 2000 ml Receiving Flask Borosilicate Glass Reaction Flask 2 Neck Boiling Flask with 24/40 Standard Taper Ground Joint, Flask Round Bottom for Vacuum Distillation Apparatus

About this item 【PREMIUM QUALITY】 - This boiling flask pack is built with high-quality borosilicate glass, heat-resistant, sturdy, and durable. It is heavy-wall designed, made by hand blown process to ensure uniform wall thickness. 【EXCELLENT SEALING】 - With the 24/40 standard taper ground joint, the round flask has excellent sealing and can be tightly combined with other glassware. It comes with two Keck clips to prevent the joints from separating. 【UNIFORM HEATING】 - With the spherical bottom, this round glass flask has a larger heating surface than the flat bottom flask, so that the liquid can be heated or boiled more evenly. Its surface stress is also uniformly distributed. 【CLEAR & TRANSPARENT】 - The round borosilicate has a clear and transparent wall without protrusion, easy to observe the experimental phenomena, and liquid changes. The precise specification is marked for classification. 【EXTENSIVE APPLICATION】 - The round bottom glasses are indispensable in the distillation experiment and reflux process, which can withstand typical laboratory thermal variations in chemistry processes like heating and cooling.