Description
SVS screw connection with cone NS 29/32 is a laboratory glassware transition piece designed to couple a standard ground joint to a screw-thread fitting. It features a cone joint NS 29/32 together with a GL 14/6 thread conforming to DIN 12257, providing a secure interface between larger ground-joint apparatus and screw-connected tubing or accessories. The seal is specified as 12 × 6 mm and the length is 70 mm; only the glass part is supplied. This adapter from manufacturer Witeg belongs to the range of ground-joint reducers and screw couplings used in chemical synthesis, distillation and analytical laboratories. Its standardised dimensions allow modular assembly of vacuum systems, reaction trains or sample-handling lines where an NS 29/32 cone must meet a GL thread. Net weight is 0,022 kg. The SVS design delivers a compact, reproducible solution for laboratories that require reliable transitions between conical ground joints and screw connections while remaining fully compatible with existing glassware inventories.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Cone joint: NS 29/32
- Thread: GL 14/6 (DIN 12257)
- Seal dimensions: 12 x 6 mm
- Length: 70 mm
- Design: glass part only
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Distillation & extraction glassware
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Distillation heads, adapters & columns
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Questions about Screw-thread, with cone, cone ST 29/32
What is this article?
Screw-thread, with cone, cone ST 29/32 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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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.
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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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.



