Description
Gas filter funnel, conical, 20 ml, porosity 0, NSK 19/26 is a specialised laboratory glassware item engineered for filtration and gas-handling applications. Constructed from borosilicate 3.3 glass, the conical funnel features a fused VitraPOR® filter plate of 20 mm diameter with porosity 0, delivering controlled filtration performance. The integrated standard ground joint NSK 19/26 ensures secure, leak-tight connections to complementary glass apparatus in vacuum or inert-gas setups. With a 20 ml capacity, this compact funnel suits small-volume sample processing in analytical chemistry, organic synthesis and quality-control laboratories. The robust borosilicate construction provides outstanding thermal and chemical resistance, while the permanently fused filter disc eliminates the need for separate frits. Offered in a pack of two pieces from manufacturer ROBU - Stereon, the funnel supports reproducible workflows where precise porosity and reliable joint geometry are essential. Ideal for clarifying solutions, retaining fine precipitates or introducing gases under controlled conditions, it combines durability with ease of cleaning for repeated laboratory use.
This article is part of Büchner & filter funnels, in Funnels.
Key features
- Pack size: 2 pc(s)
- Material: Borosilicate 3.3
- Capacity: 20 ml
- Filter plate diameter: 20 mm
- Porosity: 0
- Ground joint: NSK 19/26
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Questions about Filter Funnel, conical, 20 ml, Por. 0, ST 19/26 cone
What is this article?
Filter Funnel, conical, 20 ml, Por. 0, ST 19/26 cone is the article on this page. Luminix Health distributes ROBU - Stereon for laboratory use. It sits in Büchner & filter funnels, inside Funnels, in Labware.
A Büchner funnel is a perforated porcelain or plastic plate used with a rubber cone and vacuum to pull liquid through a filter paper. A filter funnel is the glass cone that holds a folded paper under gravity. The plate diameter decides the paper size.
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 Büchner & filter funnels. The catalogue is Labware.
Shelves beside this one are Funnels (plastic, glass & steel), 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.
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.