Description
Long ground joint cone extension NS 19/38 is a standardised laboratory glassware component for building modular apparatus with conical ground joints. This NS long cone with extension is specified for joint size NS 19/38, with an outer diameter of 17 mm, an overall length of 150 mm and a wall thickness of 1,8 mm. The extended cone form supports flexible positioning of connected flasks, condensers and adapters while preserving a reliable ground-glass seal. Pack size is 10 pc(s), and each piece has a net weight of 0,029 kg. These cones from manufacturer Witeg fall within the standard ground-joint category used in chemical synthesis, distillation and general analytical setups. The NS 19/38 geometry is widely interchangeable with matching sockets and intermediate pieces, helping laboratories assemble leak-resistant lines without custom glassblowing. Consistent diameter, length and wall thickness support repeatable fits across multi-piece apparatus. Suitable where dimensional accuracy and durable wall construction are required for routine laboratory connections.
This article belongs on Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 10 pc(s)
- Joint size: NS 19/38
- Outer diameter: 17 mm
- Length: 150 mm
- Wall thickness: 1,8 mm
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Distillation & extraction glassware
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Questions about Cone full length ST 19/38
What is this article?
Cone full length ST 19/38 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.