Description
Cylindrical dropping funnel 250 ml with pressure equalisation is an ungraduated laboratory glassware item intended for controlled addition of liquids during chemical synthesis and routine laboratory dosing. The cylindrical body is fitted with cone and socket NS 29/32 (K+H) together with an NS stopcock plug that incorporates threaded stopcock security, enabling reliable dropwise delivery under equalised pressure. A 4 mm bore provides adequate flow for medium-volume reagent transfers. Rated capacity is 250 ml and net weight is 0,252 kg, so the funnel integrates readily into standard ground-joint apparatus used in research, process development and quality-control settings. Supplied by manufacturer Witeg, it falls within the product groups of dropping funnels with ground joints and dosing funnels. The ungraduated design favours durability for repeated laboratory use when precise scale graduations are not required. Pressure equalisation reduces the likelihood of pressure differentials that can interrupt flow or stress glass joints when liquids are added to closed reaction vessels containing solvents or reactive mixtures.
This article is part of Dropping funnels, in Funnels.
Key features
- Pack size: 2 pc(s)
- Capacity: 250 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 Dropping funnels cylindrical 250ml C+S ST 29/32
What is this article?
Dropping funnels cylindrical 250ml C+S ST 29/32 is the article on this page. Luminix Health distributes Witeg 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.