Made of pure cellulose treated with hydrochloric and hydrofluoric acid, filter papers are used for straining with good retention and flow rates. These cellulose filters create a semi-permeable barrier perpendicular to a liquid or airflow in order to separate fine substances from liquids or air. Different grades of filter paper are available for performing various laboratory applications including routine lab work, ranging from coarse to fine filtration of particulates. VWR offers a wide range of qualitative and quantitative filter papers with varying pore size, particle retention, flow rate and filtration times.
Ion exchange papers, grade SG81, Whatman™
Supplier: Whatman products (Cytiva)
These ion exchange papers combine cellulose and large pore silica gel for separations in which both partition and adsorption are important, including the separation of phospholipids, steroids, phenols and dyes.
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Cellulose chromatography and blotting paper roll, Whatman™
Supplier: Whatman products (Cytiva)
Cellulose Chromatography and Blotting Paper Roll contains cotton linter filter sheets for electrophoresis and amino acid chromatography.
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Carta per cromatografia in cellulosa, Whatman™
Supplier: Whatman products (Cytiva)
Whatman chromatography papers are widely used across the world, reflecting their purity, high quality and consistency. They are made from specially selected cotton cellulose and rigorously quality controlled to ensure uniformity within the grade.
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Qualitative and technical filter papers, grade MN 514 ¹/₄
Supplier: MACHEREY-NAGEL
Carta da filtro per analisi qualitative, Grade MN 514 ¹/₄, 320 mm
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Carta per separazione di fase, grado 480
Supplier: Sartorius
This phase separating paper is impregnated with stabilised silicon, thus rendering it hydrophobic and it retains water, but allows solvents to flow through. The flow stops automatically when the entire solvent has passed through, this eliminates the need to use separating funnels.
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Filter paper discs for Buchner table-top funnels, SP Bel-Art
Supplier: Bel-Art Products, a Part of SP
These heavy bond grade filter paper discs are custom-sized to fit table-top Buchner funnels and have a thickness of 0,30 mm.
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Filter boards
Supplier: Sartorius
Filter boards are used for filtration of cooking oils, transformer oils and as base paper for impregnation with certain reagents.
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Filter papers, non woven
Supplier: Sartorius
These non woven grades are made of rayon. Ideal for the filtration or prefiltration of viscous solutions containing particles visible with the naked eye.
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Qualitative filter papers, grades MN 619 and 619 1/4, circles and folded filters
Supplier: MACHEREY-NAGEL
MN 619 is a dense filter paper with very high particle retention and slow flow rate. Excellent clarifying capacity for cloudy suspensions and for water and soil analysis.
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Qualitative filter papers, grades MN 616 md and 616 md 1/4, circles and folded filters
Supplier: MACHEREY-NAGEL
MN 616 md is slightly more retentive than MN 615 with a corresponding increase in filtration time.
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Qualitative filter papers, grades MN 618 and 618 1/4, circles and folded filters
Supplier: MACHEREY-NAGEL
MN 618 is a thick filter paper with medium flow rates and finer retention. It's higher loading capacity than thinner papers makes it especially useful for the filtration of large quantities of liquids.
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Filter papers for fat analysis
Supplier: MACHEREY-NAGEL
Smooth folded filter papers for fat analysis.
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Qualitative filter paper, grades MN 617 we and 617 we 1/4, circles and folded filters
Supplier: MACHEREY-NAGEL
MN 640 we is the fastest quantitative filter paper with highest flow rate for general laboratory filtration. It is used for example in analytical procedures of samples with coarse or gelatinous particles.
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Hardened qualitative filter papers, standard grades, MN 1670, MN 1672 and MN 1674
Supplier: MACHEREY-NAGEL
Wet-strengthened analytical filter papers are made of refined pulp and linters and feature a content of α-cellulose of more than 95%. The smooth surface of these papers allows fibre-free filtration.
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Qualitative filter paper, grades MN 619 eh and 619 eh 1/4, circles and folded filters
Supplier: MACHEREY-NAGEL
MN 619 eh is slightly more dense than MN 619 with high particle retention and slow flow rate.
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Qualitative filter papers, grades MN 617 and 617 1/4, circles and folded filters
Supplier: MACHEREY-NAGEL
MN 617 is a fast filter paper with excellent retention of coarse particles and gelatinous precipitates. This soft filter paper is used for example in routine clean up of biological or organic solutions.
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Chromatography papers
Supplier: Ahlstrom-Munksjö
Ahlstrom-Munksjö offers a full range of high quality cotton papers with high absorbency - ideal for chromatographic analysis and blotting methods with gel (Southern, Northern and Western Blots). Ahlstrom-Munksjö manufactures, both in Europe and in the US, absorbent papers made of the highest purity cotton linters. These media do not contain additive of any kind, thus preventing any contamination during the transfer steps.
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Kieselguhr filter papers
Supplier: MACHEREY-NAGEL
This filter paper retains very fine turbidities and is e.g. recommended for the clarification of urines or sugar solutions.
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Black filter paper for the detection of light precipitates, grade MN 220
Supplier: MACHEREY-NAGEL
This filter paper, which is dyed black with a sulphur dye, is used to identify small quantities of light precipitates. For example, it is used for the detection of fluorine or silicon.
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Quantitative filter papers, ashless grades, MN 640
Supplier: MACHEREY-NAGEL
These quantitative filter papers are made from refined pulp and linters. They are purified in a highly developed clean-up process to remove organic and inorganic impurities. This ensures a low ash content of <0,01 %. They are consistent performance and give safe results in gravimetric analyses.
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Filter paper for breweries
Supplier: MACHEREY-NAGEL
Filter papers used in beverage industries. Available in plain and folded form.
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Qualitative filter papers, grade MN 612 1/4
Supplier: MACHEREY-NAGEL
Embossed filter papers particularly suited for general laboratory applications.
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Qualitative filter papers, technical, smooth, grade MN 713
Supplier: MACHEREY-NAGEL
Smooth filter papers particularly suited for technical applications such as industrial filtrations.
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Application specific filter papers, Fritware®, SP Bel-Art
Supplier: Bel-Art Products, a Part of SP
These HDPE sheets can be cut, sawed, formed, machined and welded to fabricate special items.
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Qualitative filter papers, grades MN 616 and 616 1/4, circles and folded filters
Supplier: MACHEREY-NAGEL
MN 616 is a filter paper with medium retention and flow rate. This filter paper covers a wide range of filtration applications.
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Carta per cromatografia in cellulosa
Supplier: Sartorius
Chromatography papers are not only ideal for chromatography, but also for routine and repetitive separations, routine analysis of proteins in serum (e.g. human albumin) and several absorption applications like those common in the life sciences and diagnostics. They are made of cotton linters with more than 98% alpha-cellulose content and <0,04% ash content.
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Qualitative filter paper, standard grades MN 615 and 615 1/4, circles, sheets and folded filters
Supplier: MACHEREY-NAGEL
MN 615 is the most widely used general purpose filter paper with medium retention and flow rate. This filter paper covers a wide range of laboratory applications and is frequently used for clarifying liquids.
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Activated charcoal filter papers, grade MN 728
Supplier: MACHEREY-NAGEL
The activated charcoal filter paper MN 728 is particularly suited for the clarification and decolouring of solutions. The activated charcoal is incorporated in the paper and cannot be washed out into the filtrate.
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Qualitative filter papers, grades MN 619 de and 619 de 1/4, circles and folded filters
Supplier: MACHEREY-NAGEL
MN 619 de is an extra dense filter paper for excellent clarification of cloudy suspensions. Maximum retention capacity in qualitative range for fine particle filtration e.g. in chemical analysis.