Description
1-Way stopcock bent NS 12,5 with a 2,5 mm bore is a compact glass laboratory stopcock for precise control of liquids and gases in small-scale apparatus. It features a solid ground-joint plug together with bent tube connections, allowing neat side-arm routing where space is limited. The NS 12,5 joint is compatible with matching laboratory glassware, while the 2,5 mm bore is well suited to fine flow control and reduced hold-up volumes. Built to DIN 12541 and supplied complete with glass plug and screw fitting, the stopcock delivers a dependable seal for vacuum and atmospheric work. This Witeg model is ready for use in micro-distillation setups, analytical manifolds, vacuum lines and general fluid-handling assemblies in research and teaching laboratories. Net weight is only 0,036 kg, making it easy to integrate into delicate glassware trains. The bent configuration keeps connecting tubing organised and accessible without obstructing neighbouring joints or clamps.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Joint size: NS 12,5
- Bore: 2,5 mm
- Design: Bent tube connections
- Plug: Glass plug with screw fitting
- Standard: DIN 12541
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Questions about stopcock ST 12
What is this article?
stopcock ST 12 is the article on this page. Luminix Health distributes Witeg 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?
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.