Qualitative Filter Paper
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. Avantor offers a wide range of qualitative and quantitative filter papers with varying pore size, particle retention, flow rate and filtration times.
Qualitative filter papers, standard grades, grade 604 ½, Whatman™
Supplier: Whatman products (Cytiva)
Grade 604½ Qualitative Filter Papers for coarse precipitates. Maintains flow rate due to the reduction in filter paper contact with funnel side and the self-supporting shape of the filter itself.
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Grade 602 h ½ qualitative filter papers, Whatman™
Supplier: Whatman products (Cytiva)
A dense prepleated filter paper for collecting very small particles and removing fine precipitates.
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Grade 113V qualitative filter papers, fluted, Whatman™
Supplier: Whatman products (Cytiva)
Cytiva's Whatman Grade 113V creped filter paper, for use with a conical filter funnel, offers fast filtration and high loading capacity for analysis involving coarse particles or gelatinous precipitates.
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Qualitative filter papers, wet strengthened grades, grade 91, Whatman™
Supplier: Whatman products (Cytiva)
A general purpose creped cellulose filter for less critical routine analysis. Widely used to assay sucrose in cane sugar and within pharmaceutical laboratories for routine filtration.
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Application specific filter papers, grade 0790 ½, Whatman™
Supplier: Whatman products (Cytiva)
Acid washed cellulose filter paper with ash content of approximately 0,01%, low magnesium, for the determination of trace elements (Mg, Mn, Co, Cu, Mo, B).
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Grade 520 a filter papers for technical use, Whatman™
Supplier: Whatman products (Cytiva)
A thin paper with great wet strength and a very high flow rate. Frequently used in technical applications such as the filtration of viscous liquids and emulsions (e.g., sweetened juices, spirits and syrups, resin solutions, oils, or plant extracts).
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Qualitative filter papers, standard grades, grade 602 eh and 602 eh ½, Whatman™
Supplier: Whatman products (Cytiva)
Grade 602EH and 602EH½ Qualitative Filter Papers for very fine precipitates.
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Grade 5 qualitative filter papers, Whatman™
Supplier: Whatman products (Cytiva)
A standard grade clarifying filter excellent for cloudy suspensions and for water and soil analysis.
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Grade 3 qualitative filter papers, Whatman™
Supplier: Whatman products (Cytiva)
A standard grade filter used in qualitative analytical techniques to determine and identify materials. For use in büchner funnels.
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Grade 602 h qualitative filter papers, Whatman™
Supplier: Whatman products (Cytiva)
A standard grade filter esed in sample preparation, e.g., in the beverage industry for residual sugar determination, acidic spectra, refractometric analysis, and HPLC.
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Grade 520 a ½ qualitative filter papers, Whatman™
Supplier: Whatman products (Cytiva)
A thin paper with great wet strength and a very high flow rate. Frequently used in technical applications such as the filtration of viscous liquids and emulsions (e.g., sweetened juices, spirits and syrups, resin solutions, oils, or plant extracts).
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Grade 114V qualitative filter papers, fluted, Whatman™
Supplier: Whatman products (Cytiva)
Whatman Grade 114V smooth filter paper from Cytiva is wet-strengthened for high mechanical stability. Grade 114V fluted filters are suitable for recovery of large particles and gelatinous precipitates.
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Grade shark skin filter papers for technical use, Whatman™
Supplier: Whatman products (Cytiva)
Whatman Grade Shark Skin filter papers are a creped filter paper that is commonly used to remove impurities in a variety of applications.
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Qualitative filter papers, grade 201, Whatman™
Supplier: Whatman products (Cytiva)
A general qualitative filter for less critical routine analysis. Widely used in industrial laboratories and students laboratories for routine filtration.
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Qualitative filter papers, standard grades, grade 591, Whatman™
Supplier: Whatman products (Cytiva)
These cellulose filters are used in qualitative analytical techniques to determine and identify materials.
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Qualitative filter papers, technical, smooth, grade 3 m/N
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%. They are used for routine analyses like clarification, determination of substances, but also as discs with a centre hole for technical applications. Grades with a wet burst resistance >30 kPa are referred to as wet-strengthened and are therefore suitable for pressure or vacuum filtration.
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