250mL Square Glass Media/Storage Bottle with GL45 Cap | U.S Overview. 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: 64mm OD x 143mm Hgt. Graduation range: 50ml to 200ml.