Description
Nitrogen tubes with stopcock, DURAN® are laboratory glass vessels designed for controlled handling of nitrogen and related gas or liquid work under inert conditions. Each tube is manufactured from DURAN® borosilicate glass and is fitted with an integral stopcock together with a ground-glass cone NS 14/23, allowing secure connection to standard jointed apparatus. The 25 ml capacity suits small-scale preparations, sample transfer and temporary storage where isolation from ambient atmosphere is required. Supplied as a single piece weighing 0,062 kg, the tube integrates readily into existing ground-joint setups used in synthetic, analytical and teaching laboratories. These nitrogen tubes (Lenz) belong to the broader family of round flasks and flasks with ground glass joints, offering a compact format for inert-gas techniques, Schlenk-type manipulations and general gas-handling workflows. The combination of DURAN® glass, stopcock control and NS 14/23 cone provides a practical, reusable component for everyday laboratory glassware assemblies without unnecessary complexity.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc(s)
- Product type: Nitrogen tube with stopcock
- Glass type: DURAN®
- Capacity: 25 ml
- Cone: NS 14/23
- Stopcock: Integrated
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Questions about Nitrogen tubes with stopcock, DURAN®, with stopcock, cone NS 14/23, 25 ml
What is this article?
Nitrogen tubes with stopcock, DURAN®, with stopcock, cone NS 14/23, 25 ml is the article on this page. Luminix Health distributes Lenz for laboratory use. It sits in Stopcocks & valves, inside Tubing, hoses & fittings, in Labware.
A stopcock opens and closes a line, or directs it between ports. Glass stopcocks have a ground plug that needs grease or a PTFE key. The bore decides the flow. A two-way and a three-way key are different parts.
Tubing is how a liquid or a gas moves between two vessels without being poured. Silicone stays flexible and survives repeated autoclaving. PTFE resists almost every solvent and is stiff. PVC is the ordinary flexible line for water and for mild aqueous work. The fitting, not the tube, is what usually leaks: the barb, the thread and the stopcock have to match the tube bore. Glass and plastic apparatus around these lines is indexed under ISO laboratory ware.
Which category should I open next?
The category is Tubing, hoses & fittings. The sub-category is Stopcocks & valves. The catalogue is Labware.
Shelves beside this one are Hose connectors, adapters & fittings, PVC, PTFE & other tubing, Silicone tubing and Tubing accessories.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.