Narrow-neck bottle with ground glass stopper 250 ml DURAN clear NS 19/26, pack of 10

DURAN® bottle, narrow neck, clear, NS 19/26, with glass stopper, 250 ml The classic reagent bottles that can be sealed with a stopper are made of DURAN® borosilicate 3.3 Type 1 glass and are suitable for storing liquid and solid chemicals as well as reagents. The bottles have a narrow, conical ground joint and comply with ISO 4796-2. The narrow neck is suitable for liquids, and the angle of the bottle shoulders ensures that the contents can be poured out easily. The glass stopper provides excellent sealing, protecting the contents against evaporation, oxidation and contamination. The labelling area and the Retrace Code for traceability of production are printed in durable white enamel. Special properties and advantages: Consists only of glass components and is therefore suitable for storing aggressive materials Tight closure through ground joint Clearly legible scale with graduation marks for measuring the contents Fired-in and therefore permanently durable white print Application: Storage of air-sensitive reagents, pharmaceuticals and chemicals, storage of hygroscopic solids, granules and pharmaceutical powders, transport and shipment of samples