Borosilicate 3.3 glass, clear.

• Narrow or wide neck, with beaded rim
• Very good chemical resistance
• High temperature resistance
• Minimal thermal expansion, giving relatively high resistance to temperature changes

An economical alternative for a wide range of laboratory applications. Flasks have flared rim with markings for approximate volume graduations and a white labelling area.

ISO 1773 (narrow mouth)

DIN ISO 24450 (wide mouth)