DURAN® Lid stopper, brown with standard ground joint, octagonal, NS 60/46, semi-hollow

DURAN® glass stoppers, brown, semi-hollow, NS 60/46 Semi-hollow or solid amber DURAN® glass stoppers can be used to close glassware items such as flasks, separatory funnels or reagent bottles with ground joint necks. The Standard Taper ground glass joint forms a tight, leak-proof seal. Use grease for heating or vacuum applications. With octagonal shaped head. Note on using DURAN® glass stoppers with soda-lime glass bottles: If the bottle and the stopper have a temperature difference greater than 30 °C, the glass stoppers can become stuck! Special features and benefits: UV protection due to external color application Long shelf life and good chemical resistance of brown coloration Consists only of glass components and is therefore suitable for storing aggressive materials Tight closure due to standard ground joint Octagonal Application: Storage of light-sensitive reagents, pharmaceuticals and chemicals, Storage of air-sensitive reagents and chemicals, Storage of hygroscopic solids, granulates and powders