Description
Cone NS 71/51 extension is a precision ground-joint male cone with an elongated shank for laboratory apparatus requiring a longer NS connection. Manufactured to DIN 12249 PRECISO, it carries the nominal joint size NS 71/51 together with a diameter of 65 mm, a length of 200 mm and a wall thickness of 3,2 mm. The extended profile provides additional reach between glass modules while maintaining a stable, leak-resistant ground seal suitable for vacuum and atmospheric work. Offered as one piece from manufacturer Witeg, the component fits standard interchangeable ground-joint setups in distillation trains, reaction vessels, custom manifolds and analytical glassware. With a net weight of 0,28 kg and PRECISO-grade grinding, it supports reproducible mating with corresponding NS 71/51 sockets. Chemists and technicians can deploy this extension when conventional short cones do not span the required distance, preserving DIN interchangeability and mechanical integrity of the joint.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Product type: Ground joint cone with extension
- Joint size: NS 71/51
- Standard: DIN 12249 PRECISO
- Diameter: 65 mm
- Length: 200 mm
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Distillation & extraction glassware
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Questions about ST-Cones, skirted, ST 71/51, acc. to DIN
What is this article?
ST-Cones, skirted, ST 71/51, acc. to DIN 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.