Description
VitraPOR® biplanar glass filter plate, diameter 280 mm, porosity 1, is a precision laboratory filtration disc manufactured from borosilicate glass 3.3. The plate has a defined thickness of 18,0 mm with a tolerance of ± 0,5 mm, and its faces are ground to achieve exact thickness and a plane-parallel surface. This biplanar finish supports reliable mounting and even contact in filtration holders, custom glass apparatus and process equipment. Porosity grade 1 sits in the medium-coarse region of the VitraPOR® range, suited to laboratory and preparative filtration tasks that require controlled particle retention with a chemically inert glass frit. Borosilicate 3.3 provides the thermal stability and chemical resistance commonly needed when working with aqueous solutions and many organic media. Supplied as one piece from manufacturer ROBU - Stereon, this 280 mm disc is designed for integration into filtration systems and specialised glassware where a porosity 1 filter plate with tight thickness control and ground, plane-parallel faces is specified for consistent performance.
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: 280 mm
- Porosity: 1
- Thickness: 18,0 mm ± 0,5 mm
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Questions about Filter Disc, bi-plane, 280 mm, Por. 1 Thickness 18.0 mm ± 0.5 mm
What is this article?
Filter Disc, bi-plane, 280 mm, Por. 1 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.