Description
PORA NC membrane filters are white nitrocellulose membrane discs offering a pore size of 0,45 µm and a diameter of 25 mm for standard laboratory filtration. Made from cellulose nitrate and cellulose mixed ester (CN, MCE), the membrane provides a defined pore structure for clarification and particulate retention in routine analytical procedures. Packs of 50 pieces supply a convenient working stock for research, quality-control and sample-preparation laboratories. The white membrane face allows straightforward visual assessment of retained particles or residues after use. Available from manufacturer Macherey-Nagel as non-sterile PORAFIL NC filters, they are intended for general laboratory applications with compatible media. The 25 mm diameter matches widely used filter holders and mid-volume filtration assemblies. Uniform 0,45 µm pores support reproducible filtration performance from disc to disc. Each pack has a net weight of 0,02 kg, simplifying bench storage and handling. This PORA NC format combines mixed-ester membrane chemistry with a practical 50-piece pack size for everyday membrane filtration work.
This article is part of Membrane filters, in Filtration.
Key features
- Pack size: 50 pc(s)
- Material: Cellulose nitrate, cellulose mixed ester (CN, MCE)
- Pore size: 0,45 µm
- Diameter: 25 mm
- EAN: 4046681008863
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
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Questions about PORA NC, white, PW:0,45 µm, d: 25 mm
What is this article?
PORA NC, white, PW:0,45 µm, d: 25 mm is the article on this page. Luminix Health distributes Macherey-Nagel for laboratory use. It sits in Membrane filters, inside Filtration, in Lab consumables.
A membrane filter is the disc itself, without a syringe housing. Pore size, polymer and diameter are the specification, and the disc has to sit in a holder. Gridded membranes are for counting colonies. A membrane and a filter paper of the same diameter are not interchangeable.
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 Membrane filters. The catalogue is Lab consumables.
Shelves beside this one are Filter paper, Sintered glass filter plates & discs, Syringe filters, Filter cartridges & capsules, 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.