These general-purpose media bottles feature permanent white, imprinted graduations and marking spots. Borosilicate glass bottles; Linerless polypropylene cap ; Drip free polypropylene ring; Screw thread opening with 30mm ID; Dimensions: 70mm OD x 143mm Hgt. Graduation range: 50ml to 200ml; Autoclavable to 140°C (284°F)