Description
Round filter MN 640 dd, 24 cm is a circular laboratory filter paper intended for routine filtration tasks in analytical and preparative work. With a diameter of 24 cm these filters provide a generous surface area suitable for funnels and filtration assemblies of corresponding size. Supplied in packs of 100 pieces, they offer a practical stock quantity for laboratories that process multiple samples daily. The MN 640 dd grade from manufacturer Macherey-Nagel delivers consistent paper-based separation performance for clarification, precipitate collection and general sample preparation. The uniform round geometry promotes even wetting and steady flow under gravity or mild vacuum conditions. Net and gross weight of the pack is 0,44 kg, reflecting a compact and easy-to-store format. These round filters support everyday chemical analysis, quality-control and research workflows where reliable, ready-to-use filter media are required. The 24 cm diameter accommodates larger sample volumes while remaining compatible with standard laboratory glassware, helping maintain efficient throughput in busy laboratory environments.
This article is part of Filter paper, in Filtration.
Key features
- Pack size: 100 pc(s)
- Diameter: 24 cm
- Filter type: Round filter
- Grade: MN 640 dd
- EAN: 4046681042676
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Questions about Round filter MN 640 dd, 24 cm
What is this article?
Round filter MN 640 dd, 24 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.