Description
Dropping funnel, cylindrical, with pressure equalisation and PTFE stopcock, NS 14/23, 100 ml is a ground-joint laboratory funnel for controlled addition of liquids in synthesis and sample preparation. The cylindrical body is made from high-quality borosilicate glass LBG 3.3 and is fitted with a PTFE stopcock for smooth, chemically resistant flow regulation. An integrated pressure-equalisation path supports safer transfer into closed or reduced-pressure systems by balancing vapour and gas pressure during dosing. The NS 14/23 joint matches common European ground-glass assemblies, while the 100 ml capacity suits medium-scale additions, titrant delivery, and reagent metering. A plastic stopper is included for temporary closure of the top opening. This dropping funnel from manufacturer Labbox (GLASSCO line) is intended for organic and inorganic laboratory workflows where reproducible dropwise or continuous addition is required. Net weight is 0,250 kg. The single-piece unit is ready for integration into standard jointed glassware setups used in research, teaching, and quality-control laboratories that rely on borosilicate apparatus with PTFE stopcocks.
This article is part of Dropping funnels, in Funnels.
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Questions about Pressure equalising dropping funnel, cylindrical, with PTFE stopcock, 14/23, 100
What is this article?
Pressure equalising dropping funnel, cylindrical, with PTFE stopcock, 14/23, 100 is the article on this page. Luminix Health distributes Labbox for laboratory use. It sits in Dropping funnels, inside Funnels, in Labware.
A dropping funnel adds a liquid slowly into a closed reaction through a stopcock and usually a ground joint. A pressure-equalising arm keeps the funnel from air-locking. The joint size and the volume are the specification.
A funnel guides a liquid or a powder into a narrower mouth. A filter funnel holds a paper. A Büchner funnel is the flat perforated plate used with vacuum. A separating funnel has a stopcock so two liquid layers can be run off one at a time. A dropping funnel adds a reagent slowly into a reaction. The bore and the stopcock are the parts that matter. This glassware is listed under ISO laboratory glassware.
Which category should I open next?
The category is Funnels. The sub-category is Dropping funnels. The catalogue is Labware.
Shelves beside this one are Funnels (plastic, glass & steel), Büchner & filter funnels, Separating funnels and Powder funnels.
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.

