500ml. Kimble KIMAX GL-45 Blue Cap Storage/Media Bottle. General purpose bottles feature white enamel graduations and marking spot. Wide, 30mm I.D. openings are designed for easy filling. Replaceable, drip-free, clear polypropylene pour ring and GL-45 screw threads and linerless, autoclavable (140°C max), polypropylene blue cap are included on each bottle.