Description
Nitrogen tubes with stopcock fabricated from DURAN® glass offer a 25 ml working volume with an NS 14/23 socket for laboratory operations under inert or controlled atmospheres. An integral stopcock enables the tube to be closed or opened as needed, supporting sample isolation, gas exchange and transfer steps while limiting exposure to air. The standardised NS 14/23 ground joint mates with common laboratory adapters, stoppers and connecting glassware. Delivered as one unit with a weight of 0,062 kg, the tube is appropriate for synthetic and analytical work in research, development and teaching settings where moderate sample volumes are handled under nitrogen or similar protective gases. DURAN® borosilicate glass provides the chemical and thermal performance required for repeated laboratory use with organic solvents and reagents. Manufactured by Lenz, this stopcock-equipped nitrogen tube complements other ground-joint vessels in inert-gas and Schlenk-style setups. It is categorised with round flasks and flasks with ground glass joints for controlled-atmosphere labware applications.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Product type: Nitrogen tube with stopcock
- Material: DURAN® glass
- Joint: Socket NS 14/23
- Volume: 25 ml
- Weight: 0,062 kg
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Questions about Nitrogen tubes with stopcock, DURAN®, with stopcock, socket NS 14/23, 25 ml
What is this article?
Nitrogen tubes with stopcock, DURAN®, with stopcock, socket 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.

