Description
Gas distribution tube type A with diameter 25 mm, porosity 4 and height 250 mm is a specialised laboratory component for introducing and dispersing gases into liquid media. Manufactured from borosilicate 3.3 glass, the tube incorporates a centered cup measuring Ø 25 mm that holds a VitraPOR® filter plate of porosity grade 4. The total height of 250 mm suits immersion and handling in standard laboratory vessels. This gas distribution tube from manufacturer ROBU - Stereon serves chemical and biochemical laboratories needing controlled gas distribution through a sintered glass filter. The VitraPOR® filter plate of porosity 4 supports gas bubble formation in liquid systems. Supplied as 5 pc(s), the type A design with centered cup positions the filter element securely during use. Laboratory staff employ gas distribution tubes of this kind for aeration, sparging and gas washing work. Borosilicate 3.3, the centered Ø 25 mm cup and the porosity 4 VitraPOR® plate together form a compact assembly for routine gas-liquid contact applications in research and quality-control settings.
This article is part of Sintered glass filter plates & discs, in Filtration.
Key features
- Pack size: 5 pc(s)
- Type: Gas distribution tube, type A
- Material: Borosilicate 3.3
- Cup diameter: Ø 25 mm
- Height: 250 mm
- Porosity: 4
Recently viewed
You may also like
Questions about Gas Distribution Tube, Type A, Ø 25 mm, Por. 4, H 250 mm
What is this article?
Gas Distribution Tube, Type A, Ø 25 mm, Por. 4, H 250 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.

