Description
Filter plate, biplane, 220 mm, Por. 4 is a VitraPOR® glass filter disc made from borosilicate 3.3 for laboratory filtration assemblies. With a diameter of 220 mm and porosity grade 4, it provides a defined pore structure suited to finer solid–liquid separations. Thickness is specified as 15,0 mm with a tolerance of ± 0,5 mm; both faces are ground to deliver exact thickness and a true plane-parallel surface. This biplane geometry supports uniform seating and even flow across the working area when the plate is mounted in filtration hardware. Supplied as a single piece from manufacturer ROBU - Stereon, the disc is intended for setups that rely on the chemical durability and dimensional stability of borosilicate 3.3 glass. Ground plane-parallel faces help maintain consistent contact and reproducible filtration performance over the full plate area. Porosity 4 is selected when finer particle retention is required relative to coarser grades. The substantial plate thickness adds mechanical robustness during handling, installation, cleaning, and repeated use in analytical or preparative laboratory filter apparatus.
This article is part of Sintered glass filter plates & discs, in Filtration.
Key features
- Pack size: 1 pc
- Product type: Biplane glass filter plate
- Material: Borosilicate 3.3
- Brand: VitraPOR®
- Diameter: 220 mm
- Porosity: 4
- Technical Information Sheet:
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Questions about Filter Disc, bi-plane, 220 mm, Por. 4 Thickness 15.0 mm ± 0.5 mm
What is this article?
Filter Disc, bi-plane, 220 mm, Por. 4 Thickness 15.0 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.
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. Delivery across Europe, two to five days when in stock. 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.
