Description
VitraPOR® biplanar glass filter plate, porosity 4, is a large-format sintered disc for laboratory filtration applications requiring finer pore structure. Made from borosilicate glass 3.3, the plate measures 260 mm in diameter with a thickness of 18,0 mm and a tolerance of ± 0,5 mm. Ground faces provide exact thickness and a plane-parallel surface, promoting even media contact, stable mounting, and reproducible filtration performance in apparatus and custom assemblies. Porosity grade 4 is suited to finer particle retention compared with coarser frit grades while retaining the chemical durability of borosilicate 3.3. Offered as a single unit from manufacturer ROBU - Stereon, this VitraPOR® filter plate supports integration into filter holders, process glassware, and laboratory setups that specify dimensional precision and planarity. The biplanar geometry and controlled thickness help ensure consistent sealing against mating surfaces. Appropriate for research, preparative, and quality-control work where a 260 mm porosity-4 glass filter plate is required.
This article is part of Sintered glass filter plates & discs, in Filtration.
Key features
- Pack size: 1 pc
- Product type: VitraPOR® biplanar glass filter plate
- Material: Borosilicate glass 3.3
- Diameter: 260 mm
- Porosity: 4
- EAN: 4058072158231
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Questions about Filter Disc, bi-plane, 260 mm, Por. 4 Thickness 18.0 mm ± 0.5 mm
What is this article?
Filter Disc, bi-plane, 260 mm, Por. 4 Thickness 18.0 mm ± 0.5 mm 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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.