Description
Cylindrical graduated dosing funnel 250 ml with NS 29/32 is a precision laboratory funnel for controlled addition of liquids in synthesis and analytical work. The cylindrical body is graduated for a 250 ml capacity with 5 ml divisions, enabling clear volume monitoring during dosing. A PTFE fine dosing valve provides precise flow regulation of reagents and solvents. Manufactured from DURAN tubing, the funnel offers the chemical resistance and thermal stability expected of high-quality borosilicate laboratory glassware. An insertable Mariotte tube is included to support constant-pressure delivery when required by the procedure. Cone and socket joints NS 29/32 ensure secure, leak-resistant connection to compatible reaction vessels and apparatus. This dosing funnel from manufacturer Witeg has a net weight of 0,242 kg and is supplied as a single piece. It is well suited to organic synthesis, preparative chemistry and titration setups where graduated cylindrical dosing funnels with fine valve control are needed. The combination of DURAN glass construction, PTFE valve and Mariotte-tube capability makes it a practical choice for demanding laboratory applications requiring accurate, adjustable liquid addition.
This article is part of Funnels (plastic, glass & steel), in Funnels.
Key features
- Pack size: 1 pc
- Capacity: 250 ml
- Graduation interval: 5 ml
- Joint size: NS 29/32
- Valve: PTFE fine dosing valve
- Material: DURAN tubing
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Questions about Funnels, 250:5 ml, constant addition, cy
What is this article?
Funnels, 250:5 ml, constant addition, cy is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Funnels (plastic, glass & steel), inside Funnels, in Labware.
This is the ordinary funnel, in plastic, glass or steel, used to guide a liquid or a powder into a narrower mouth. The cone angle, the stem bore and the material are the choices. It does not, by itself, filter.
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 Funnels (plastic, glass & steel). The catalogue is Labware.
Shelves beside this one are Büchner & filter funnels, Dropping 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.