Round Bottom Flask with Ground Joint

Round Bottom Flask with Ground Joint

The Round Bottom Flask with Ground Joint is a fundamental piece of laboratory glassware designed for reactions, distillations, and a wide range of synthesis procedures. Manufactured from borosilicate glass, this flask combines durability with excellent thermal and chemical resistance, making it suitable for routine bench work as well as more demanding experimental setups. The rounded base promotes even heat distribution and allows the flask to be used with heating mantles, oil baths, and other standard heating apparatus.

A key feature of this flask is its ground glass joint, which provides a secure, leak-resistant connection to condensers, adapters, and other jointed components. The flask is offered with standard taper joint sizes including 24/40, 19/22, and other common configurations, allowing it to integrate easily into existing glassware assemblies. For laboratories that require a matching socket connection, this design pairs naturally with a complementary Ground Joint flask configuration.

Technical Specifications

• Material: Borosilicate glass
• Volume range: 50 mL to 5000 mL
• Joint size: 24/40, 19/22, and other standard sizes
• Temperature resistance: up to 500°C
• Chemical resistance: resistant to acids, alkalis, and organic solvents
• Wall thickness: 1.5 mm to 2.5 mm, depending on size
• Weight: varies with size, typically between 50 g and 1 kg

Material and Performance

Borosilicate glass is widely chosen for laboratory applications because of its low coefficient of thermal expansion, which helps the flask withstand temperature changes during heating and cooling cycles. With a temperature resistance rated up to 500°C, the flask is well suited to processes involving heat. Its chemical resistance to acids, alkalis, and organic solvents broadens the range of compatible reagents and solvents that can be used safely. The wall thickness ranges from 1.5 mm to 2.5 mm depending on the size of the flask, balancing structural strength with thermal responsiveness across the available volume range.

Applications and Compatibility

This flask is commonly used in distillation, reflux, evaporation, extraction, and general chemical synthesis. The broad volume range, from 50 mL up to 5000 mL, supports both small-scale reactions and larger preparative work. Because the unit features a ground joint rather than a plain neck, it connects directly to jointed glassware systems without the need for additional fittings. Laboratories building or expanding a glassware set may also wish to consider plain-neck variants from the broader line of round bottom flasks to complement different setups.

Whether used for heating, distillation, or multi-step organic procedures, the Round Bottom Flask with Ground Joint offers a reliable, standards-compatible component for the modern laboratory. This product is available soon.