Description
The DURAN® dropping funnel with pressure equalisation, cylindrical shape, graduation and ground joint is intended for the dosed addition of solutions, reaction mixtures and chemicals in laboratory settings. This model is equipped with an NS 19/26 ground joint and offers a nominal volume of 100 ml. Alongside the standard ground joint at the lower end, a pressure equalisation tube is integrated to avoid both underpressure and overpressure within the assembly of reaction vessels. Particular advantages include the pressure equalisation tube, NS cone, NS stopcock and stopcock retainer, allowing the rate of addition to be adjusted as required. The cylindrical body with graduation provides a tight closure through the standard ground joint. A fired-on, permanently durable white printed scale with line graduation enables straightforward reading and measurement of contents. Produced from borosilicate glass 3.3 by manufacturer Duran/DWK Life Sciences, the funnel combines chemical durability with clear visibility. Typical applications encompass the uniform and controlled supply of liquids to a reaction mixture as well as the measurement of liquid volumes during experimental procedures.
This article is part of Dropping funnels, in Funnels.
Key features
- Pack size: 1 pc
- Storage temperature: Standard
- Brand: DURAN®
- Material: Borosilicate glass 3.3
- Nominal volume: 100 ml
- EAN: 4032051026285
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Questions about DURAN® Dropping Funnel, cylindrical, ground joint and pressure equalisation tube
What is this article?
DURAN® Dropping Funnel, cylindrical, ground joint and pressure equalisation tube is the article on this page. Luminix Health distributes DWK Life Sciences 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.

