3 GlassGL32 polyethylene (PE) screw cap on size 50mLGL45 polyethylene (PE) screw caps on sizes 100mL to 10,000mLPouring ring for drip free liquid transferHigh resistance to chemicalsDual scale metric graduationsDurable white enamel printingLarge white marking area.ASTM E438, Type I, Class A, Borosilicate 3.Bottle, Media, Globe Glass, 10000mL, GL45 Screw Cap, Dual Graduations, 1/Box A drip free pour ring and autoclavable polyethylene (PE) screw cap enable sterilizations of media and reagents. Globe Glass media bottles are available in sizes 50mL to 10000mL.