Beschreibung
Jacketed dropping funnel of 50 ml nominal volume with socket and cone NS 14,5/23 and glass stopcock of 2,5 mm bore enables precise, temperature-controlled addition of reagents in synthetic and analytical procedures. Made from borosilicate glass 3.3, the funnel is graduated and supplied without pressure-equalisation tube. It features a hollow glass stopcock NS 14,5 together with tempering connections threaded GL 14, complete with cap and polypropylene olive of 8,6 mm for circulating heating or cooling media. This configuration allows the contents to be maintained at a defined temperature during dropwise addition, improving reaction control and reproducibility. The double-ended NS 14,5/23 joints integrate readily into standard laboratory assemblies. Manufactured by Rettberg, the item is intended for organic synthesis, crystallisation work and other applications requiring metered liquid delivery under thermal regulation. Net weight is 0,360 kg; the funnel is supplied as one piece for immediate use in research and process laboratories.
This article is part of Reaction vessels & jacketed vessels, in Beakers & flasks.
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Questions about Dropping funnel with temp. jacket, 50 ml, joints size 14,5/23, stopcock 2,5 mm,
What is this article?
Dropping funnel with temp. jacket, 50 ml, joints size 14,5/23, stopcock 2,5 mm, is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Reaction vessels & jacketed vessels, inside Beakers & flasks, in Laborbedarf.
A reaction vessel is the flask a synthesis actually runs in, sometimes jacketed so a fluid can heat or cool the wall. The joints, the working volume and the jacket connections are the specification. It is not a storage bottle.
A beaker is an open working vessel: easy to pour, poor as a measure. An Erlenmeyer flask has a flat base and a conical wall so a liquid can be swirled without climbing out. A round-bottom flask is for heating under a condenser, because the heat meets a curved wall and the joint at the neck connects to the rest of the glassware. Borosilicate is the glass that survives the temperature change. These forms are listed under ISO laboratory glassware.
Which category should I open next?
The category is Beakers & flasks. The sub-category is Reaction vessels & jacketed vessels. The catalogue is Laborbedarf.
Shelves beside this one are Round-bottom flasks, Beakers, Erlenmeyer flasks, Flat-bottom flasks, Flasks (other) and Beaker & flask 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.

