PYREX® borosilicate glass.

• Very good chemical resistance
• High temperature resistance
• Minimal thermal expansion, giving relatively high resistance to temperature changes

These distilling flasks are used for the distillation of bituminous materials suitable for road treatment. Also used in the Standard Method of Test of the Distillation of Creosote Oil, American Wood Preservers Association, method 11e, Barrett method C 9, American Association of State Highway Officials, methods T 52 and T 62. Flasks take a No. 5 rubber stopper.