Description
Round filter MN 640 md, 5,5 cm is a circular laboratory filter paper with a diameter of 5,5 cm, supplied in convenient packs of 100 pieces. These MN 640 md grade filters are intended for standard solid-liquid separation tasks in analytical chemistry, sample preparation and general laboratory workflows. Available from manufacturer Macherey-Nagel, the filters fit common small funnels and support efficient clarification of solutions as well as collection of precipitates. Each pack of 100 pieces provides an ample supply for routine high-throughput work or teaching laboratories where multiple filtrations are performed daily. The unit has a net weight of 0,03 kg, simplifying handling and inventory control. Medium-density characteristics of the MN 640 md series make the filters versatile across a range of aqueous and organic media typically encountered in research and quality-control settings. Consistent dimensions and straightforward handling promote reproducible filtration results from one experiment to the next, supporting reliable everyday laboratory practice without added complexity.
This article is part of Filter paper, in Filtration.
Key features
- Pack size: 100 pc(s)
- Diameter: 5,5 cm
- Filter type: Round filter
- Grade: MN 640 md
- EAN: 4046681043376
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Questions about Round filter MN 640 md, 5.5 cm
What is this article?
Round filter MN 640 md, 5.5 cm is the article on this page. Luminix Health distributes Macherey-Nagel for laboratory use. It sits in Filter paper, inside Filtration, in Lab consumables.
Filter paper is a cellulose sheet of a stated retention and speed. Qualitative paper clarifies. Quantitative, ashless paper is for a precipitate that will be weighed or ashed, because the paper itself leaves almost no ash. The diameter has to match the funnel.
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 Filter paper. The catalogue is Lab consumables.
Shelves beside this one are Sintered glass filter plates & discs, 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. 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.

