Description
Reducing adapter KNS 45/40 → HNS 24/29 is a ground-joint transition reducer designed to link laboratory glassware that uses different standard taper dimensions. The piece presents a cone joint NS 45/40 on one side and a socket joint NS 24/29 on the other, allowing a larger male joint to be joined cleanly to a smaller female joint. Classified among Übergangsstücke and normschliff reducing adapters, it serves modular distillation, reaction and vacuum assemblies where a pronounced size reduction is required. The adapter is offered by manufacturer Witeg as a single unit with a net weight of 0,056 kg and an identical gross weight of 0,056 kg. Its standardised KNS-to-HNS geometry follows common European ground-joint conventions, promoting interchangeability across compatible flasks, condensers and receivers. Laboratories employ this transition piece to avoid custom glassblowing when apparatus of dissimilar NS sizes must be combined. Clear joint markings simplify selection, installation and later replacement within existing glassware trains, supporting efficient reconfiguration of preparative and analytical setups.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Product type: Transition reducing adapter
- Cone joint: NS 45/40
- Socket joint: NS 24/29
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Questions about Reducing adapter CST 45/40 -> SST 24/29
What is this article?
Reducing adapter CST 45/40 -> SST 24/29 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Hose connectors, adapters & fittings, inside Tubing, hoses & fittings, in Labware.
A hose connector or adapter joins two lines, or steps one bore down to another. The barb diameter has to match the tube, and the thread has to match the stopcock or the bottle. Most leaks are a mismatch here, not a hole in the tube.
Tubing is how a liquid or a gas moves between two vessels without being poured. Silicone stays flexible and survives repeated autoclaving. PTFE resists almost every solvent and is stiff. PVC is the ordinary flexible line for water and for mild aqueous work. The fitting, not the tube, is what usually leaks: the barb, the thread and the stopcock have to match the tube bore. Glass and plastic apparatus around these lines is indexed under ISO laboratory ware.
Which category should I open next?
The category is Tubing, hoses & fittings. The sub-category is Hose connectors, adapters & fittings. The catalogue is Labware.
Shelves beside this one are PVC, PTFE & other tubing, Stopcocks & valves, Silicone tubing and Tubing accessories.
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.
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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.
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.