Description
Büchner funnel 1000 ml P4 is a glass filter nutsche intended for laboratory vacuum filtration of solids from liquids. It combines a 1000 ml working capacity with a sintered glass filter plate of porosity grade P4, giving a defined pore structure suited to medium-fine separations. The filter plate measures 120 mm in diameter, while the stem has an outer diameter of 22 mm, allowing secure connection to standard vacuum flasks and adapters. With a net weight of 0,725 kg, the funnel offers a robust yet manageable form factor for routine bench work. Manufactured by Witeg, this Filternutsche belongs to the family of glass frit and slotted-plate filtration ware used in analytical chemistry, sample preparation and process development. The one-piece glass construction supports chemical resistance across common aqueous and organic media and facilitates cleaning between runs. Typical applications include collection of precipitates, clarification of suspensions and isolation of crystalline products under reduced pressure. Supplied as a single piece, the 1000 ml P4 Büchner funnel integrates readily into existing filtration setups that require a reproducible porosity grade and standardised plate and stem dimensions.
This article is part of Büchner & filter funnels, in Funnels.
Key features
- Pack size: 1 pc
- Capacity: 1000 ml
- Porosity grade: P4
- Plate diameter: 120 mm
- Stem outer diameter: 22 mm
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Questions about Filter funnels, 1000 ml, P4 disc dia.:
What is this article?
Filter funnels, 1000 ml, P4 disc dia.: is the article on this page. Luminix Health distributes Witeg 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.

