Description
Cylindrical dropping funnel 500 ml with pressure equalisation is an ungraduated laboratory glassware piece designed for controlled liquid addition in preparative chemistry and larger-scale laboratory dosing. It features a cylindrical body, cone and socket NS 29/32 (K+H), and an NS stopcock plug with threaded stopcock security, permitting dropwise transfer while pressure between funnel and receiver remains balanced. The 4 mm bore accommodates practical flow rates for higher-volume reagent addition. Capacity is 500 ml with a net weight of 0,375 kg, fitting standard ground-joint setups common in research, pilot and quality-control laboratories. This funnel from manufacturer Witeg is classified among dropping funnels with ground joints and dosing funnels. Its ungraduated cylindrical construction prioritises mechanical strength for frequent use when volumetric markings are not needed. Pressure equalisation helps prevent vapour lock and excessive pressure differences that can hinder flow or stress joints during addition of solvents and reagents to closed reaction systems in organic and inorganic workflows.
This article is part of Dropping funnels, in Funnels.
Key features
- Pack size: 2 pc(s)
- Capacity: 500 ml
- Joint size: NS 29/32 (cone and socket)
- Bore diameter: 4 mm
- Design: Cylindrical, ungraduated, with pressure equalisation
- Stopcock: NS stopcock plug with threaded stopcock security
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Questions about Ampoules à addition cylindriques 500ml C+S ST 29/32
What is this article?
Ampoules à addition cylindriques 500ml C+S ST 29/32 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Entonnoirs à addition, inside Entonnoirs, in Matériel de laboratoire.
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 Entonnoirs. The sub-category is Entonnoirs à addition. The catalogue is Matériel de laboratoire.
Shelves beside this one are Entonnoirs (plastique, verre & acier), Entonnoirs Büchner & filtrants, Ampoules à décanter and Entonnoirs à poudre.
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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.