Simax Borosilicate Bell Jar – 200 mm × 300 mm

This Simax Borosilicate Bell Jar is a high‑quality laboratory dome designed for vacuum experiments, gas demonstrations, and general science display work. Manufactured from durable borosilicate glass, it offers excellent chemical and thermal resistance while maintaining outstanding clarity. The bell jar features a ground flange for a secure seal when used with vacuum plates and includes a sturdy glass knob for safe handling and lifting.

With an outside diameter of 200 mm and a height of 300 mm, it is ideal for a wide range of physics and chemistry demonstrations commonly carried out in school laboratories, colleges, and research settings.

Key Features

• Made from premium Simax borosilicate glass
• Ground flange for reliable sealing with vacuum plates
• Glass knob for safe lifting and manoeuvring
• Outside diameter: 200 mm
• Height: 300 mm
• High chemical durability and thermal resistance
• Excellent clarity for demonstrations and display use

Ideal for School Science Lessons

Perfect for KS3–KS5 physics and chemistry, this bell jar supports demonstrations such as:

• Vacuum experiments (e.g., sound in a vacuum)
• Gas behaviour and pressure investigations
• Observing effects of air removal on everyday objects
• Displaying sensitive or reactive setups in a controlled environment

Its robust construction and laboratory‑grade design make it a reliable, long‑lasting resource for engaging and high‑impact science demonstrations.