Description
Filter plate, Ø 40 mm, Por. 4 is a glass filter disc for laboratory solid-liquid separation and sample clarification. It combines a 40 mm diameter with porosity grade Por. 4, giving a defined filtration geometry that fits standard filter funnels, holders and apparatus used in analytical and preparative work. As a Glasfilter product carrying the Rettberg ® registered trademark, the plate is intended for routine filtration steps, media support and clarification tasks across chemical, biological and general laboratory environments. The single-piece pack size of 1 pc allows straightforward replacement or assembly into existing setups without bulk commitment. Glass construction of this filter plate type supports the dimensional stability and handling characteristics expected of laboratory frits, while the compact 40 mm format suits smaller-scale assemblies and limited sample volumes. Porosity designation Por. 4 enables selection according to the separation requirements of the method in use. Whether integrated into vacuum filtration lines or gravity-driven systems, this filter plate from manufacturer Rettberg provides a consistent, catalogue-specified component for everyday laboratory filtration workflows.
This article is part of Sintered glass filter plates & discs, in Filtration.
Key features
- Pack size: 1 pc
- Product type: Glass filter
- Diameter: Ø 40 mm
- Porosity: Por. 4
- Registered trademark: Rettberg ®
- Technical Information Sheet:
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Questions about Filter Disk, Ø 40 mm, Por. 4
What is this article?
Filter Disk, Ø 40 mm, Por. 4 is the article on this page. Luminix Health distributes Rettberg 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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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. 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.