Description
Cold finger, two-part, type KFL 29 GL-Z is a laboratory cold-trap component intended for condensation and condensate collection duties. The unit offers a coolant content of approximately 2000 ml together with a condensate volume of approximately 250 ml, supporting typical vacuum and distillation workflows. Its two-part construction simplifies filling, emptying and cleaning, while the cold-trap connection is executed as GL18 with a PTFE olive for chemically resistant, leak-tight coupling. The cold finger is designed for use with Dewar vessels of type 18C. Produced by manufacturer KGW Isotherm, the item is supplied as a single piece with a net weight of 2,8 kg and a gross weight of 3,1 kg. These dimensions and capacities make the cold finger suitable for routine organic-synthesis, solvent-recovery and purification setups that require reliable low-temperature trapping. The GL18/PTFE interface ensures compatibility with standard laboratory tubing and fittings, facilitating straightforward integration into existing glassware trains without additional adapters.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Type: KFL 29 GL-Z
- Design: Two-part
- Coolant capacity: ca. 2000 ml
- Condensate volume: ca. 250 ml
- Connection: GL18 with PTFE olive
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Questions about Cold trap, two sections, Typ KFL 29-GL-Z
What is this article?
Cold trap, two sections, Typ KFL 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.

