Description
VitraPOR® biplanar glass filter plate with porosity 4 is a borosilicate 3.3 disc of 290 mm diameter and 18,0 mm thickness with a tolerance of ± 0,5 mm. Both faces are ground to deliver exact thickness and a plane-parallel surface, supporting dimensional consistency in laboratory and process filtration setups. Made from borosilicate glass 3.3, the plate provides the chemical and thermal durability associated with this established glass type. Supplied as one piece from manufacturer ROBU - Stereon, this VitraPOR® filter plate pairs defined porosity grade 4 with tightly controlled geometry. The biplanar form and ground surfaces aid uniform seating and integration into filter holders, apparatus and custom assemblies. Porosity 4 designates a specific pore-size class for filtration work that calls for this grade. Thickness held within ± 0,5 mm together with plane-parallel finishing helps maintain predictable mechanical fit and flow behaviour. The component suits technical and laboratory environments that require robust glass filter media with specified diameter, porosity and thickness for clarification or separation tasks.
This article is part of Sintered glass filter plates & discs, in Filtration.
Key features
- Pack size: 1 pc
- Brand: VitraPOR®
- Material: Borosilicate glass 3.3
- Diameter: 290 mm
- Porosity: 4
- Thickness: 18,0 mm ± 0,5 mm
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Questions about Filter Disc, bi-plane, 290 mm, Por. 4 Thickness 18.0 mm ± 0.5 mm
What is this article?
Filter Disc, bi-plane, 290 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.
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.
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.
