A PLUS Jointed Round‑Bottom Flask – 50ml, 19/26 Joint

The A PLUS Jointed Round‑Bottom Flask (50ml, 19/26) is a premium yet cost‑effective piece of ASTM‑accredited 3.3 borosilicate glassware. Designed for excellent durability, heat resistance, and chemical stability, this flask matches the performance of leading brands and is fully compatible with Quickfit® jointed glassware systems.

Its classic round‑bottom shape ensures uniform heat distribution, making it ideal for refluxing, distillation, heating, and small‑scale chemical synthesis. With a precision‑ground 19/26 joint, the flask provides a secure, leak‑free fit in any jointed apparatus, making it a dependable component for school and laboratory use.

Key Features

• 50ml round‑bottom flask with 19/26 joint
• Made from ASTM‑accredited 3.3 borosilicate glass for superior durability
• Fully compatible with Quickfit® jointed glassware
• Exceptional thermal and chemical resistance
• Ideal for reflux, distillation, heating, and micro‑scale synthesis
• Clear, robust, laboratory‑quality construction for repeated classroom use

Ideal for School Science Lessons

Ideal for GCSE, A‑Level, IB, and undergraduate chemistry, this 50ml round‑bottom flask is perfect for core practical activities that require a small but durable reaction vessel. Its compatibility with standard joint sizes means it integrates seamlessly into a wide range of teaching and experimental setups.

• Conducting reflux reactions in organic chemistry courses
• Building distillation assemblies using jointed glassware
• Heating and mixing small reaction quantities safely and efficiently
• Supporting technician‑prepared practical demonstrations
• Helping students develop professional laboratory skills

Durable, affordable, and lab‑grade, the A PLUS Jointed Round‑Bottom Flask 50ml (19/26) is a valuable addition to any school or laboratory glassware collection.