2 Neck Round Bottom Flask, 45/50 Center and 24/40 Side Joints, 5-20 L

About this item Applications: large 5000 ml / 10000 ml / 20000 ml round bottom flask for laboratory-scale operations, suitable for reflux, distillation, and multi-step setups Joint Design: 45/50 center joint and 24/40 side joint for connecting condensers, thermometers, or addition funnels simultaneously Material: constructed from G3.3 borosilicate glass with thick, uniform walls for excellent durability, thermal resistance, and long-term lab use Chemical & Thermal Resistance: withstands thermal shock, acids, alkalis, and common solvents, suitable for repeated heating, boiling, and cooling cycles Structure Design: spherical bottom promotes uniform heating, and smooth glass surface reduces residue for easy cleaning