These general-purpose media bottles feature permanent white, imprinted graduations and marking spots. Borosilicate glass Linerless polypropylene cap Drip free polypropylene ring Screw thread opening 30mm ID Dimensions: 94mm OD x 222mm Hgt. Graduation range: 100ml to 900ml Autoclavable to 140°C (284°F) Maximum bottle temperature: 450°C (842°F)