Specifically engineered for high-performance laboratory setups, this 250ml Boiling Flask features a large 40/38 joint. The wider neck design is optimized for systems requiring higher vapor throughput, such as jacketed Soxhlet extractors.
Key Specifications:
Capacity: 250ml.
Joint Size: 40/38 Large Taper Joint (Matches heavy-duty/jacketed extraction tubes).
Material: Low-expansion Borosilicate Glass 3.3 (Expansion 3.3).
Design: Reinforced neck and uniform wall thickness for safe heating and durability.
Advantages:
High Vapor Flow: The 40/38 joint minimizes pressure buildup and allows for more efficient solvent cycling.
Robust Connection: Provides a very stable base for tall or heavy extraction apparatus.
Easy Cleaning: The wider opening makes it easier to remove residue after evaporation.

