Round Bottom Flask with two necks

Round Bottom Flask with Two Necks - Premium Laboratory Glassware

Our round bottom flasks with two necks are essential multi-purpose laboratory vessels designed for advanced chemical synthesis, distillation, and reaction processes. These borosilicate glass flasks feature superior thermal resistance and chemical inertness, making them indispensable for professional laboratories, research facilities, and educational institutions worldwide.

Key Features

• Dual neck configuration for simultaneous addition of reagents and gas inlet/outlet operations
• Premium borosilicate 3.3 glass construction with excellent thermal shock resistance
• Standard ground glass joints (typically 14/20, 19/26, or 24/29) for secure connections
• Smooth, uniform wall thickness ensuring optimal heat distribution
• Chemical-resistant surface suitable for acids, bases, and organic solvents
• Available in multiple volumes from 25mL to 2000mL

Applications

These versatile two-neck round bottom flasks excel in reflux reactions, vacuum distillations, and multi-step organic syntheses. The dual openings enable controlled atmosphere reactions, continuous stirring operations, and simultaneous monitoring of reaction progress. Ideal for pharmaceutical research, petrochemical analysis, and academic chemistry programs.

Technical Specifications

Manufactured from laboratory-grade borosilicate glass with low expansion coefficient (3.3 × 10⁻⁶/K). Operating temperature range: -70°C to +500°C. All joints are precision-ground to ensure leak-proof connections with standard laboratory equipment including condensers, addition funnels, and gas inlet tubes.