Filter Papers
Made of pure cellulose treated with hydrochloric and hydrofluoric acid, filter paper is quantitative paper used for straining with fast flow rates and good retention. It creates 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 routine laboratory work, ranging from coarse to fine filtration of particulates.
Grade 114 qualitative filter papers, Whatman™
Supplier: Whatman products (Cytiva)
These extremely strong filter papers have a high wet strength due to the addition of a small quantity of chemically stable resin.
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Qualitative Filter Papers, Wet-Strengthened
Supplier: Sartorius
These qualitative filter papers are essentially used for analytical purposes and routine analyses, whenever no gravimetric analyses are required. They are wet-strengthened and can be used for pressure and vacuum filtration. They are made of refined pulp and linters with an >95% alpha-cellulose content, are very pure with an ash content <0,1%.
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Grade 0965 filter papers for technical use, Whatman™
Supplier: Whatman products (Cytiva)
Coarse filter mat with high wet strength.
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Grade 2589 C filter papers for technical use, Whatman™
Supplier: Whatman products (Cytiva)
Thick filter with medium to slow filtration speed, high wet strength, and good retention for smaller particles.
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Qualitative filter papers, standard grades, grade 593 ¹/₂, Whatman™
Supplier: Whatman products (Cytiva)
These cellulose filters are used in qualitative analytical techniques to determine and identify materials. A standard grade filter paper for fine precipitates.
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Phase separating paper, grade 1PS
Supplier: Whatman products (Cytiva)
1PS phase-separating paper is a hydrophobic filter for routine solvent extraction. Within seconds it retains aqueous phases, while solvent phases flow through.
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Cellulose chromatography papers, 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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Quantitative filter papers, ashless grades, grade 589/1 and 589/1 ½, Whatman™
Supplier: Whatman products (Cytiva)
With less than 0,01% ash, Cytiva's Whatman Grade 589/1 filter papers can be used for the Blaine test in the cement industry and as an ash content test filter for foodstuffs.
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Qualitative filter papers, technical, smooth, grade C 140
Supplier: Sartorius
These smooth filter papers are made of refined pulp and linters with more than 95% alpha-cellulose content. The ash content of these filter papers is between 0,1 and 0,15%.
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Grade 0860 ½ qualitative filter papers, Whatman™
Supplier: Whatman products (Cytiva)
Comparable to Grade 0858 but with a smooth surface, slightly thinner and faster.
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Grade 0903 filter papers for technical use, Whatman™
Supplier: Whatman products (Cytiva)
Thin filter paper with smooth surface. Offers medium to slow flow rate and good retention for small particles.
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Qualitative filter papers, grade 230, Whatman™
Supplier: Whatman products (Cytiva)
A general qualitative filter with creped surface. Widely used in industrial laboratories and students laboratories for routine filtration.
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Qualitative filter papers, wet strengthened grades, grade 1575, Whatman™
Supplier: Whatman products (Cytiva)
Slow cellulose filter papers with high wet strength. This grade has the same chemical resistance characteristics as Grade 1573.
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Application specific filter papers, grade 3459, Whatman™
Supplier: Whatman products (Cytiva)
Creped cellulose filter papers with good retentivity at a relatively high filtration speed. They are used for the clarifying filtration of dried beet pulp extracts or beet juice after the addition of lead acetate for subsequent polarimetric sugar determination. They are specifically designed for the Venema unit (lead acetate method).
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Grade 0905 filter papers for technical use, Whatman™
Supplier: Whatman products (Cytiva)
A creped paper for coarse particles, offers a very high filtration speed.
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Cone folded filter papers, Whatman™
Supplier: Whatman products (Cytiva)
Cone folded filter paper saves valuable time when undertaking repetitive or multiple analyses.



