Schlenk flask is a reaction vessel typically used in air-sensitive chemistry. It can be heated directly in an open flame and can withstand typical laboratory thermal variations in Chemistry processes like heating and cooling. 

* High Vacuum Valve: We use high quality vacuum PTFE valve to ensure solvent tightness. 

* High Quality Glass Material: Made from premium lab glass, it boasts excellent chemical resistance, allowing it to withstand the corrosion of various chemical reagents commonly used in distillation processes. It also has good thermal stability, capable of enduring the temperature changes during distillation. 

* Smooth surface:The flask body is smooth,uniform wall thickness distribution, good heat conduction, durable