Description
VitraPOR® filter plate, biplane, is a borosilicate 3.3 glass disc with diameter 240 mm and porosity grade 4. Thickness is specified as 15,0 mm with a tolerance of ± 0,5 mm. Both faces are ground to maintain exact thickness and a plane-parallel surface, supporting uniform seating and consistent filtration geometry in laboratory apparatus. This glass filter plate from manufacturer ROBU - Stereon is intended for use as a filtration medium where controlled pore structure and dimensional accuracy are required. Porosity 4 provides a finer defined pore class suited to many analytical and preparative filtration tasks that need tighter retention. Borosilicate 3.3 construction offers the chemical and thermal behaviour expected of this glass type in routine lab work. The single-piece pack is ready for integration into custom filter holders, columns or specialised glassware assemblies. Ground, plane-parallel faces help ensure reliable contact with mating components and stable flow paths. Select this biplane VitraPOR® plate when a precisely dimensioned porosity-4 disc is needed for filtration setups that depend on reproducible geometry and controlled pore performance.
This article is part of Sintered glass filter plates & discs, in Filtration.
Key features
- Pack size: 1 pc
- Product type: Biplane glass filter plate
- Brand: VitraPOR®
- Material: Borosilicate glass 3.3
- Diameter: 240 mm
- Porosity: 4
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Questions about Filter Disc, bi-plane, 240 mm, Por. 4 Thickness 15.0 mm ± 0.5 mm
What is this article?
Filter Disc, bi-plane, 240 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.