Beschrijving
Dropping funnel 25 ml 2 x NS 14/23 is a cylindrical laboratory dropping funnel with pressure equalisation for controlled addition of liquids in organic synthesis, extraction and general preparative chemistry. The body is graduated at 25:0,5 ml and includes a drop counter that supports clear volume reading and fine metering of reagents. Two standard ground joints NS 14/23 connect securely to common glassware assemblies, while the NS-PTFE stopcock plug with threaded stopcock lock provides a reliable seal and smooth operation during extended use. A bore diameter of 2,5 mm maintains a practical flow path for typical laboratory solvents and aqueous solutions. Offered as a pack of 2 pieces from manufacturer Witeg, this graduated dosing funnel suits teaching laboratories and research benches that rely on classic ground-joint apparatus. The cylindrical form with pressure equalisation reduces pressure build-up during addition and enables reproducible dropwise delivery. Compact handling is supported by a net weight of 0,095 kg. It is a practical choice wherever pressure-equalised, graduated addition is required in everyday wet-chemistry workflows.
This article is part of Dropping funnels, in Funnels.
Key features
- Pack size: 2 pc(s)
- Type: Dropping funnel with pressure equalisation
- Capacity: 25 ml
- Graduation: 25:0,5 ml
- Joint size: 2 x NS 14/23
- Bore: 2,5 mm
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Questions about Dropping funnel 25ml 2 x ST 14/23
What is this article?
Dropping funnel 25ml 2 x ST 14/23 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Dropping funnels, inside Funnels, in Labmateriaal.
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 Labmateriaal.
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.

