A PLUS Jointed Round‑Bottom Flask – 500ml, 24/29 Joint

The A PLUS Jointed Round‑Bottom Flask (500ml, 24/29) is a high‑quality yet great‑value piece of ASTM‑accredited 3.3 borosilicate glassware. Fully equivalent to and compatible with Quickfit® jointed glassware, this flask offers excellent thermal resistance, chemical durability, and long‑lasting performance—ideal for schools, colleges, and professional laboratories.

Its traditional round‑bottom design ensures even heat distribution and reduces thermal stress during heating. With a precision‑ground 24/29 joint, the flask provides a secure, leak‑free connection for use in reflux, distillation, boiling, and medium‑scale chemical synthesis. The large 500ml capacity makes it perfect for experiments requiring substantial reaction volumes.

Key Features

• 500ml round‑bottom flask with 24/29 ground‑glass joint
• Manufactured from ASTM‑accredited 3.3 borosilicate glass for superior thermal and chemical resistance
• Fully compatible with Quickfit® jointed glassware systems
• Ideal for reflux, distillation, boiling, heating, and synthesis
• Strong, clear, laboratory‑grade construction designed for repeated long‑term use

Ideal for School Science Lessons

Suitable for GCSE, A‑Level, IB, and undergraduate chemistry labs, this 500ml flask is essential for demonstrating large‑scale reactions and teaching core practical skills. Its generous capacity makes it ideal for group demonstrations, class practicals, and technician‑prepared experiments requiring larger chemical quantities.

• Used in distillation setups with jointed glassware
• Perfect for reflux reactions in organic chemistry
• Suitable for heating and mixing larger reaction volumes