3-Neck Round Bottom Heavy Wall Flask

Built for demanding lab workflows, our 3-neck heavy-wall round bottom flask provides added strength and thermal stability for heating, cooling, and vacuum applications. The three necks support common setups such as reflux, distillation, and inert gas work—allowing you to run a thermometer adapter, addition funnel, or condenser while maintaining a secure connection.

Crafted from high-quality borosilicate glass, this flask is designed to resist thermal shock and handle routine temperature changes when used with proper lab practices. The round bottom promotes even heat distribution in oil baths or heating mantles, while the heavy-wall construction helps reduce breakage risk during repeated use.

Ideal for chemical synthesis, solvent recovery, extractions, and reaction scale-up. Choose your capacity and joint sizes to match your existing glassware. 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.