Filter Paper
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.
VWR® Qualitative Filter Paper, Grade 413
Supplier: VWR International
Suitable for filtration of aluminum phosphate, barium carbonate, lead chromate, and more.
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VWR® Filter Papers
Supplier: VWR International
VWR® filter papers are high-performance cellulose-based filtration materials designed for accurate and reproducible separations in laboratory settings. Available in both qualitative and quantitative grades, these papers deliver consistent retention, flow rate, and purity across a wide range of scientific applications. Whether used in gravimetric analysis, sample cleanup, or routine laboratory workflows, VWR® filter papers provide the reliability and technical precision demanded by today's researchers.
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Whatman™ Grade 1574 and 1574 ½ Qualitative Filter Papers, Wet Strengthened Grades, Whatman products (Cytiva)
Supplier: Cytiva
Medium fast cellulose filter paper with high wet strength. This paper has the same chemical resistance characteristics as Grade 1573.
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Whatman™ Grade 595 ½ Qualitative Filter Papers, Whatman products (Cytiva)
Supplier: Cytiva
A prepleated filter used for many routine analytical applications in different industries (e.g., particle separation from food extracts or filtration of solids from digested environmental samples, e.g., for ICP/AAS analysis).
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Whatman™ Grade 602 h Qualitative Filter Papers, Whatman products (Cytiva)
Supplier: 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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Whatman™ Quantitative Filter Papers, Ashless Grades (Ash 0.01%), Grade 589/2, Whatman Products (Cytiva)
Supplier: Cytiva
Whatman Grade 589/2 filters from Cytiva are used in routine quantitative analyses, including analysis of aqueous suspension in paper, flour analysis, and sand content quantification.
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LabExact® CFP4 Qualitative Cellulose Filter Papers, 25 µm
Supplier: I.W. TREMONT CO., INC.
The fastest flow rate demonstrated by any of the qualitative cellulose filter medias, resulting in a low retention rate of approximately 25 µm.
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LabExact® CFP2 Qualitative Cellulose Filter Papers, 8 µm
Supplier: I.W. TREMONT CO., INC.
A more retentive and absorbent media than CFP1, with approximately 8 µm and a medium to slow flow rate.
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LabExact® CFP540 Quantitative Ashless Hardened Cellulose Filter Paper, 7 - 8 µm
Supplier: I.W. TREMONT CO., INC.
Grade CFP540 quantitative cellulose filter media is ashless and hardened with increased wet strength.
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LabExact® CFP3 Qualitative Cellulose Filter Papers, 6 µm
Supplier: I.W. TREMONT CO., INC.
Virtually identical to CFP1, but twice as thick, resulting in a significantly slower flow rate with a retention of approximately 6 µm.
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LabExact® CFP41 Quantitative Ashless Cellulose Filter Papers, 20 µm
Supplier: I.W. TREMONT CO., INC.
Very fast flow rates and loose retention characteristics make this grade ideal for initial separation of gelatinous precipitates.
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LabExact® CFP1234 Phase Separating Cellulose Filter Papers, 11 µm
Supplier: I.W. TREMONT CO., INC.
These cellulose filters create a hydrophobic barrier that can replace a separatory funnel to separate organic solvents from aqueous phase.
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LabExact® CFP43 Quantitative Ashless Cellulose Filter Papers, 15 to 17 µm
Supplier: I.W. TREMONT CO., INC.
Positioned as an intermediate within the quantitative cellulose family, this grade demonstrates medium retention and flow rates.
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LabExact® CFP5 Qualitative Cellulose Filter Papers, 2.5 µm
Supplier: I.W. TREMONT CO., INC.
Filtration of very fine particulate and clarification with applications in environmental sciences and chemical analysis.
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LabExact® CFP1 Qualitative Cellulose Filter Papers, 11 µm
Supplier: I.W. TREMONT CO., INC.
Very widely used filter media demonstrating retention of approximately 11 µm and medium flow rate.
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LabExact® CFP44 Quantitative Ashless Cellulose Filter Papers, 3 µm
Supplier: I.W. TREMONT CO., INC.
Very similar to CFP42 but demonstrating a slightly wider retention rate within a similar flow rate.
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