Description
PORA CM membrane filters are sterile, green, gridded membrane filters with a pore size of 0,45 µm and a diameter of 50 mm for laboratory filtration applications. The grid pattern supports colony counting and clear visual assessment of retained material after filtration. Filters are supplied sterile and individually packed in a pack of 100 pieces, helping preserve cleanliness until the moment of use. These PORAFIL CM membranes from manufacturer Macherey-Nagel are intended for workflows that require a defined 0,45 µm pore width in the widely used 50 mm disc format. The green colour improves contrast for colonies and particles on the membrane surface during inspection. Typical use includes microbiological quality control and sample preparation of aqueous matrices where sterile gridded membranes are specified. Compatible with standard membrane filtration holders and manifolds, the discs integrate readily into existing laboratory procedures. Consistent pore size, diameter, and individual packaging support reproducible handling across routine analytical series. The combination of sterility, grid marking, and defined geometry makes these filters a practical choice for controlled filtration steps in research and quality-assurance laboratories.
This article is part of Membrane filters, in Filtration.
Key features
- Pack size: 100 pc(s)
- Product type: PORA CM / PORAFIL CM membrane filter
- Colour / grid: Green, gridded
- Pore size: 0,45 µm
- Diameter: 50 mm
- EAN: 4046681009044
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Questions about PORA CM, green,steri,G PW:0,45 µm d: 50
What is this article?
PORA CM, green,steri,G PW:0,45 µm d: 50 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.