Description
Socket NS 71/51 is a precision ground-glass joint socket manufactured to DIN 12249. It features an outer diameter (A-Ø) of 75 mm, an overall length of 200 mm and a wall thickness of 3,2 mm, providing a standardised female NS 71/51 interface for modular laboratory glassware. The component supports secure, interchangeable connections in distillation trains, reaction assemblies and general apparatus setups used in chemical synthesis and analytical work. Produced by manufacturer Witeg and supplied as a single piece, it integrates readily into existing glass systems that require matching cones of the same nominal size. Defined geometry helps ensure consistent fit and sealing performance under typical laboratory conditions. With a net weight of 0,32 kg, this socket is a practical choice for research laboratories, teaching facilities and industrial R&D environments that rely on DIN-standard ground joints for flexible apparatus configuration and reliable everyday use.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Joint size: NS 71/51
- Standard: DIN 12249
- Outer diameter: 75 mm
- Length: 200 mm
- Wall thickness: 3,2 mm
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Distillation & extraction glassware
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Distillation heads, adapters & columns
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Questions about Socket ST 71/51
What is this article?
Socket ST 71/51 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Distillation heads, adapters & columns, inside Distillation & extraction glassware, in Labware.
A still head, an adapter or a column is the glass between the boiling flask and the condenser. A Vigreux or packed column gives the vapour a surface so a closer-boiling mixture can separate. The joint sizes at both ends have to match the flask and the condenser.
Distillation separates liquids by boiling point. A condenser turns the vapour back into liquid: Liebig, coil and cold-finger shapes differ in how much cooling surface they offer. A still head and a column sit between the flask and the condenser. A Soxhlet extractor washes a solid again and again with the same solvent. Ground joints have a standard size, and the joint, not the flask, is what has to match. The pieces are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Distillation & extraction glassware. The sub-category is Distillation heads, adapters & columns. The catalogue is Labware.
Shelves beside this one are Condensers, Ground-joint glassware (other) and Soxhlet & extraction apparatus.
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. Delivery across Europe, two to five days when in stock. 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.

