Macherey-Nagel MN 615 filter paper circle, qualitative, medium-speed (Ø 25–500 mm), 500 mm
€118.40
% Manufacturer's RRP: €148.00 20% below manufacturer's RRP
- Qualitative filter paper circles (pack of 100)
- Grade MN 615: Standard for routine laboratory use
- Medium-speed (22 s) & smooth
- Available in diameters from 25 mm to 500 mm
- Retention capacity: 4–12 µm
- Approx. 95 % alpha-cellulose
- For funnels of all sizes
Product information "Macherey-Nagel MN 615 filter paper circle, qualitative, medium-speed (Ø 25–500 mm), 500 mm"
The all-rounder for the laboratory: Macherey-Nagel MN 615 filter paper circles
Macherey-Nagel MN 615 filter paper circles are an indispensable part of the basic equipment for chemical analysis and industrial quality assurance. These are qualitative filter papers designed for general separation tasks where the filter residue does not need to be determined gravimetrically (no ash-free ignition required).
This product range is characterised by its versatility: it is available in numerous diameters ranging from 25 mm to 500 mm, thus covering every funnel size, from the smallest micro-funnel right through to large industrial filtration units.
Features: The happy medium
The MN 615 grade is the standard for routine filtration. It offers the ideal balance between time savings and particle retention:
- Filtration speed: Classified as medium-speed filtration (approx. 22 seconds according to DIN 53137), the paper enables rapid processing without clogging.
- Surface: The filters are smooth. This makes it considerably easier to scrape off or recover precipitates from the filter cake.
- Retention capacity: With a pore size range of approx. 4 to 12 µm, medium-fine to coarse precipitates (such as sulphides, lead chromate or calcium oxalate) are reliably retained.
Quality and purity
Macherey-Nagel uses high-quality raw materials for these filters. They consist of approximately 95 % alpha-cellulose, which contributes to high chemical stability. The ash content is approximately 0.1 %. This means the filters are largely chemically inert.
Areas of application
- Routine laboratory work: Clarification of buffer solutions and reagents.
- Education: Standard filters for schools and universities (qualitative analysis).
- Food industry: Filtration of extracts and juices.
- Electroplating & metalworking: Bath maintenance and analysis.
Select the suitable diameter
Simply select the diameter that fits your funnel from the menu above. As a rule of thumb: when inserted, the filter should not protrude beyond the rim of the funnel, but should end approximately 1–2 cm below the rim.
Technical data
- Grade: MN 615
- Type: Qualitative filter paper, filter paper circles
- Filtration speed: Medium-speed (approx. 22 s)
- Surface: Smooth
- Grammage: 70 g/m²
- Thickness: 0.16 mm
- Retention range: 4 – 12 µm
- Ash content: approx. 0.1 %
- Material: Cellulose
- Packaging unit: 100 pieces per pack
Scope of delivery
- 1 x pack of 100 Macherey-Nagel filter paper circles (grade MN 615)
(The diameter corresponds to the variant you selected above.)
Individual requirements & accessories
Filter paper is only as good as the accessories used with it. To ensure your filtration process runs smoothly, you’ll need the right funnel.
- Suitable funnels: Whether made of glass or robust plastic (PP/TPX), make sure that the filter diameter you have chosen matches the funnel size (the filter should end approx. 1–2 cm below the rim).
- Other pleat configurations: Do you require faster filtration whilst maintaining the same pore size? We also offer this grade as folded filter papers (increased surface area).
- Quantitative analyses: If you need to ash the residue (gravimetry), you will require ash-free filters (e.g. MN 640).
Can’t find the right size, or do you need large quantities for industrial applications? We can source any speciality filter for you. Please contact our procurement service.
| Diameter: | 500 mm |
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