Single Neck Round Bottom Flask

Our Single Neck Round Bottom Flask is premium laboratory glassware engineered for consistent performance in heating, distillation, reflux setups, and vacuum applications. Crafted from high-quality borosilicate 3.3 glass, this round bottom flask offers excellent thermal resistance and chemical durability — ideal for organic synthesis, analytical labs, and research workflows. Its smooth spherical design promotes even heat distribution, minimizing hotspots during boiling and reaction procedures.

The precision-formed single neck accepts standard taper ground glass joints, making it compatible with condensers, adapters, and other lab apparatus. A wide range of capacities and joint sizes ensures seamless integration into your lab’s distillation, rotary evaporation, or synthesis setups — from bench-scale experiments to larger processing tasks. 

Key Features & Benefits

Uniform heating & optimal mixing — spherical bottom design improves heat transfer compared to flat flasks, helping reduce thermal stress during reactions.

High-grade borosilicate glass — chemical-resistant and rated for repeated heating/cooling cycles in demanding lab conditions.

Flexible compatibility — precision ground single neck accepts widely-used standard joints for easy setup with distillation or reflux apparatus.

Flasks with joint sizes other than those listed are available, please call for pricing.

Manufactured with pride in Vineland, New Jersey, USA

All Glassware is individually inspected against manufacturing drawings, and Certificates of Conformity are available upon request to meet QA/QC documentation requirements.