Description
PORA NC white membrane filters are laboratory filtration membranes offering a pore size of 0,45 µm and a large diameter of 220 mm. Belonging to the PORAFIL NC series, they are manufactured from cellulose nitrate and mixed cellulose ester (CN, MCE), a combination widely applied for particle retention, liquid clarification, and analytical sample preparation. The white surface facilitates visual assessment of retained residues throughout the filtration step. Packs contain 25 pieces from manufacturer Macherey-Nagel and fit large-format holders used in vacuum or pressure filtration systems that specify a 0,45 µm rating. Non-sterile delivery allows laboratories to apply their preferred sterilisation method when the workflow demands it. Consistent porosity of the cellulose matrix supports reproducible flow in aqueous solutions and many compatible organic solvents. The 220 mm diameter addresses high-volume or large-area filtration tasks in quality control, environmental monitoring, and research clean-up. These membranes slot into established laboratory filtration procedures wherever a mixed-ester disc of this diameter and pore size is specified.
This article is part of Membrane filters, in Filtration.
Key features
- Pack size: 25 pc(s)
- Material: Cellulose nitrate, mixed cellulose ester (CN, MCE)
- Pore size: 0,45 µm
- Diameter: 220 mm
- EAN: 4046681008795
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
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Questions about PORA NC, white, PW:0,45 µm, d: 220 mmm
What is this article?
PORA NC, white, PW:0,45 µm, d: 220 mmm 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.