KIMBLE® KIMAX® GL45 Media/Storage Bottles, Graduated, DWK Wide, 30 mm Int.Ø openings are designed for easy filling. Replaceable, drip-free, clear polypropylene pour ring is incorporated into the bottle design. Bottles are available uncapped, or supplied with linerless GL45 polypropylene caps that are autoclavable to 140 °C (284 °F).