DURAN®-Super Duty glass beakers, vol. 250 ml, Ø outside 70 mm, H 95 mmDURAN Super Duty glass beakers, vol. 250 ml, outside 70 mm, H 95 mm Material: DURAN glass. Autoclavable: yes. Proven DURAN properties Glass type I, neutral glass according to USP, EP and JP High mechanical stability Reinforced, stable rim Regular wall thickness Autoclavable, sterilisable With retrace code Easily readable scale Fired on highly durable labelling Notes for use: To avoid thermal stresses in the glass, uniform and slow heating of Super