Description
Filter funnel, 250 ml, porosity 2 is a Büchner-style laboratory filtration funnel fabricated from borosilicate glass 3.3 for reliable vacuum filtration of laboratory suspensions. It is fitted with a VitraPOR® sintered glass filter plate of 80 mm diameter at porosity grade 2, offering a finer pore structure than porosity 1 for medium precipitates, crystalline products and many analytical separations. Working height above the filter plate is 65 mm, giving useful free volume inside the 250 ml nominal capacity for sample charging, washing and cake handling. This glassware piece from manufacturer ROBU - Stereon combines the chemical resistance and thermal performance of borosilicate 3.3 with a permanently integrated filter disc, reducing dependence on disposable filter papers in routine workflows. The funnel is intended for standard vacuum filtration assemblies in research, process development and quality-control laboratories. Transparent walls permit continuous observation of filtration progress and filtrate clarity. Supplied as a single unit, it fits existing laboratory filtration setups that specify porosity 2 performance in a compact 250 ml format.
This article is part of Sintered glass filter plates & discs, in Filtration.
Key features
- Pack size: 1 pc
- Capacity: 250 ml
- Material: Borosilicate glass 3.3
- Filter plate: VitraPOR® Ø 80 mm
- Porosity: 2
- Height above filter plate: 65 mm
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Questions about Filter Funnel, 250 ml, Por. 2
What is this article?
Filter Funnel, 250 ml, Por. 2 is the article on this page. Luminix Health distributes ROBU - Stereon for laboratory use. It sits in Sintered glass filter plates & discs, inside Filtration, in Lab consumables.
A sintered glass filter is a disc of fused glass particles with a porosity grade, often 0 to 5, from coarse to fine. It is cleaned and reused. The porosity number, not a micrometre guess, is the specification. Hydrofluoric acid and strong alkali attack the glass.
Filtration holds back what is larger than the pores and lets the rest through. Paper is the ordinary laboratory filter. A membrane has a stated pore size and a polymer that must survive the solvent. A syringe filter is that membrane in a housing on a syringe. Glass fibre takes a higher dirt load. Ultrafiltration holds back macromolecules and passes salts. The pore size, the chemical compatibility and the volume are the three choices. Laboratory apparatus around filtration is indexed under ISO laboratory apparatus.
Which category should I open next?
The category is Filtration. The sub-category is Sintered glass filter plates & discs. The catalogue is Lab consumables.
Shelves beside this one are Filter paper, Syringe filters, Filter cartridges & capsules, Membrane filters, Glass & quartz fibre filters, Bottle-top & vacuum filtration units, Ultrafiltration & concentrators, Filtration accessories, Extraction thimbles and Dialysis tubing & devices.
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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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.