Description
Cold finger, two-part type KF 29-GL-Z is a laboratory cold trap designed for effective condensation and cooling duties in vacuum lines and distillation systems. The two-part construction offers a coolant capacity of approximately 1000 ml and a condensate collection volume of around 150 ml, enabling efficient trapping of volatile components. Connection is provided via a GL18 thread fitted with a PTFE olive, ensuring chemical resistance and a reliable seal. The cold finger is intended for use with Dewar type 12C and is delivered as a single unit weighing 2,1 kg net (2,4 kg gross). Available from manufacturer KGW Isotherm, this apparatus is appropriate for solvent recovery, freeze-drying preparation, chemical synthesis and other laboratory processes that require controlled low-temperature condensation. The combination of standardised GL thread geometry and robust glassware construction allows straightforward incorporation into existing setups while delivering consistent thermal performance under normal laboratory conditions.
This article belongs on Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
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Questions about Cold trap, two sections, Typ KF 29-GL-Z
What is this article?
Cold trap, two sections, Typ KF 29-GL-Z is the article on this page. Luminix Health distributes KGW Isotherm 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.
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.

