Buchner Filter Flask – 250ml (3.3 Borosilicate, Side Arm)

This 250ml Buchner filter flask is made from strong 3.3 borosilicate glass and features a side arm suitable for vacuum tubing with an internal diameter of 8mm. Inner neck diameter approx. 30mm. Compatible with 29mm bottom rubber stoppers and the suggested rubber cone 33/24 → 39/28mm.

Key Features

• 250ml filtering capacity
• Side arm fits 8mm I.D. tubing
• Borosilicate glass for pressure and heat resistance
• Works with standard vacuum filtration setups

Ideal for Lessons

• Vacuum filtration using Buchner funnels
• Purification and recrystallisation
• GCSE–A‑Level separation techniques

A laboratory‑grade filter flask engineered for safe, efficient filtration.