Description
PORA NC membrane filters are white nitrocellulose membrane discs with a pore size of 0,45 µm and a diameter of 13 mm for laboratory filtration. The membrane material is cellulose nitrate and cellulose mixed ester (CN, MCE), giving a defined porous structure suited to routine clarification and particle retention work. Each pack contains 50 pieces, a practical quantity for analytical, quality-control and sample-preparation workflows that require frequent membrane changes. The plain white surface supports visual inspection of retained material after filtration. These PORAFIL NC discs from manufacturer Macherey-Nagel are supplied non-sterile for general laboratory use with compatible aqueous and organic media. The compact 13 mm diameter fits corresponding small filter holders and low-volume setups commonly used at the bench. Consistent 0,45 µm porosity helps standardise filtration steps across successive batches. With a net weight of 0,02 kg per pack, the units are easy to store and handle. Laboratories needing nitrocellulose mixed-ester membranes in a convenient 50-piece format can rely on this PORA NC variant for everyday membrane filtration tasks.
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: 13 mm
- EAN: 4046681008887
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
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Questions about PORA NC, white, PW:0,45 µm, d: 13 mm
What is this article?
PORA NC, white, PW:0,45 µm, d: 13 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.