Description
Conical filter candle Ø 34 mm with porosity 4 and height 85 mm is a VitraPOR® sintered glass filter element produced from borosilicate 3.3. The design incorporates a central bore of Ø 27 mm, enabling straightforward mounting in laboratory filtration assemblies. Its conical geometry supports efficient flow and sample handling during clarification, precipitate retention or medium preparation steps. Porosity grade 4 delivers a fine pore structure suited to many routine analytical and preparative workflows that require controlled particle retention. The inherent chemical resistance and thermal stability of borosilicate 3.3 make the candle compatible with a broad range of aqueous and organic media commonly encountered in the laboratory. Offered as a single piece from manufacturer ROBU - Stereon, this filter candle provides a durable, inert filtration medium for research, quality-control and general laboratory use where reproducible porosity and glass purity are essential.
This article is part of Sintered glass filter plates & discs, in Filtration.
Key features
- Pack size: 1 pc
- Product type: Conical VitraPOR® filter candle
- Material: Borosilicate 3.3
- Outer diameter: 34 mm
- Bore diameter: 27 mm
- Height: 85 mm
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Questions about Filter Candle-blanks, Conical Ø 34 mm, Por. 4, H 85 mm
What is this article?
Filter Candle-blanks, Conical Ø 34 mm, Por. 4, H 85 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. 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.

