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.
Certifications: ISO 1773 (narrow neck), DIN ISO 24450 (wide neck).