Description
Cone NS 40/38 extension is a precision ground joint cone with elongated stem for use in standardised laboratory glassware assemblies. Made to NS 40/38 taper dimensions in line with DIN 12249 and finished to PRECISO quality, the component offers an outer diameter of 36 mm, an overall length of 150 mm and a wall thickness of 2,0 mm. These cones with extension enable secure length adjustment and coupling between apparatus sections that rely on interchangeable ground joints. Supplied in packs of 10 pieces from manufacturer Witeg, each unit has a net weight of 0,076 kg. The geometry permits dependable mating with matching NS 40/38 sockets in distillation trains, reaction vessels and vacuum lines typical of chemical and analytical laboratories. Dimensional accuracy according to the DIN standard promotes interchangeability across compatible glassware. The extended form is especially practical when additional reach or clearance is required between jointed parts while preserving a reliable seal. Appropriate for research, teaching and everyday laboratory workflows that use NS ground joint connections.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 10 pc(s)
- Joint size: NS 40/38
- Standard: DIN 12249
- Quality: PRECISO
- Diameter: 36 mm
- Length: 150 mm
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Distillation & extraction glassware
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Distillation heads, adapters & columns
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Questions about ST-Cone ST 40/38 skirted
What is this article?
ST-Cone ST 40/38 skirted 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. 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.