Description
Dropping funnel, cylindrical, with pressure equalisation and PTFE stopcock, NS 29/32, 250 ml is a larger-capacity ground-joint funnel for metered liquid addition in laboratory synthesis and process work. Fabricated from high-quality borosilicate glass LBG 3.3, the cylindrical vessel incorporates a PTFE stopcock that provides reliable, chemically resistant control of flow rate. Pressure equalisation allows addition into closed apparatus while limiting pressure build-up or vacuum disturbance during transfer. The NS 29/32 joint is sized for wider-neck reaction flasks and multi-neck assemblies common in preparative chemistry. With a 250 ml working volume, the funnel supports larger reagent charges than smaller dropping funnels while remaining suitable for bench-scale glassware trains. A plastic stopper is supplied for the upper opening. Offered by manufacturer Labbox within the GLASSCO range, this single unit is intended for organic synthesis, extraction work-ups, and general dosing tasks where PTFE-sealed stopcocks and pressure-equalised addition improve handling. Net weight is 0,240 kg. Pair with matching NS 29/32 receivers and ensure stopcock lubrication or care practices appropriate for PTFE keys in routine laboratory use.
This article is part of Dropping funnels, in Funnels.
Key features
- Pack size: 1 pc
- Material: Borosilicate glass LBG 3.3
- Design: Cylindrical with pressure equalisation
- Stopcock: PTFE
- Joint size: NS 29/32
- EAN: 8434868086463
- GTIN: 08434868086463
- Technical Information Sheet:
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Questions about Pressure equalising dropping funnel, cylindrical, with PTFE stopcock, 29/32, 250
What is this article?
Pressure equalising dropping funnel, cylindrical, with PTFE stopcock, 29/32, 250 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.
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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.
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.