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  • Thumbnail Image for Whatman Grade 1 Qualitative Filter Papers

    A widely used standard grade filter paper for routine applications with medium retention and flow rate. It covers a wide range of laboratory applications and is frequently used for clarifying liquids. A widely used standard grade filter paper for routine applications with medium retention and flow...

  • Thumbnail Image for Qualitative Filter Papers, Ahlstrom 642

    Ahlstrom's qualitative grades of filter paper are, by definition, recommended for use in analytical methods, which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still...

  • Thumbnail Image for Whatman Grade 934-AH Glass Microfiber Filters, Binder Free

    Whatman Grade 934-AH borosilicate glass microfiber filters fromCytiva are smooth water quality filters with high retention efficiency. Grade 934-AH filters are often used in total suspended solids analysis. Smooth surface for efficient precipitate recovery Nominal particle retention of 1.5 µm Can...

  • Thumbnail Image for Whatman Grade EPM 2000 Air Sampling Filter

    Cytiva Whatman EPM 2000 air filters are used in high-volume PM-10 sampling equipment. Manufactured from 100% pure borosilicate glass, they enable detailed chemical analysis of trace pollutants with minimal interference. Air retention efficiency of 99.95 percent of 0.3 µm size particulates Selected...

  • Thumbnail Image for Grade GF/F Glass Microfiber Filters, Binder Free

    Whatman Grade GF/F filter from Cytiva business is manufactured from pure borosilicate glass. GF/F offers very fine particle retention and good loading capacity and flow rate. 0.7 µm nominal particle retention Served as the basis filter for EPA standard for the toxicity characteristic leaching...

  • Thumbnail Image for Grade 1 Qualitative Filter Papers

    A widely used standard grade filter paper for routine applications with medium retention and flow rate. It covers a wide range of laboratory applications and is frequently used for clarifying liquids. These cellulose filters are used in qualitative analytical techniques to determine and identify...

  • Thumbnail Image for Whatman Quantitative Filter Papers, Ashless, Grade 40

    Whatman Grade 40 high-purity filters from Cytiva business are general-purpose papers for quantitative analysis. Grade 40 filters are suitable for a variety of analytical filtration applications. High-purity filters contain 0.007% maximum ash content Medium nominal particle retention rating of 8...

  • Thumbnail Image for Filter Paper, Qualitative Grades

    Designed for general qualitative laboratory work Fast filtering speed; 25um particle retention Low retentivity, which retains coarse or gelatinous precipitates such as aluminum hydroxide, cobalt carbonate, mercury iodide and magnesium hydroxide Creped surface; thickness approximately 0.23 mm; 24 mm...

  • Thumbnail Image for Whatman Quantitative Filter Papers, Ashless, Grade 41

    Cytiva Whatman Grade 41 environmental pollution papers are among the fastest filter papers in the Whatman ashless range. This gravimetric filter is well suited for quantitative analysis of soil and air. Extremely low ash content (0.007% ash maximum) 20 µm nominal particle retention rating Fast...

  • Thumbnail Image for Qualitative Filter Papers, Ahlstrom 631

    Ahlstrom's qualitative grades of filter paper are, by definition, recommended for use in analytical methods, which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires...

  • Thumbnail Image for Qualitative Filter Papers, Ahlstrom 613

    Ahlstrom’s qualitative grades of filter paper are, by definition, recommended for use in analytical methods, which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still...

  • Thumbnail Image for 934-AH™ Borosilicate Glass Microfiber Filters

    1.5 µm Retention Efficient retention of small size particles to 1.5 µm Extremely high flow rate; filtration takes place both vertically and laterally through the filters High loading capacity, which continues to filter efficiently for a greater extended period Highly resistant to...

  • Thumbnail Image for Quantitative Ashless Filter Paper

    Advantec Quantitative Ashless Filter Papers are made from the highest quality alpha cotton cellulose. One critical step in the manufacturing process of these filter papers is acid washing. All grades are double acid washed in hydrochloric then hydrofluoric acid to reduce levels of SiO2, CaO, and...

  • Thumbnail Image for Qualitative Filter Papers, Ahlstrom 601

    Ahlstrom's qualitative grades of filter paper are, by definition, recommended for use in analytical methods, which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still...

  • Thumbnail Image for Grade 4 Qualitative Filter Papers

    A standard grade filter used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical. These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also...

  • Thumbnail Image for Whatman Grade 2 Qualitative Filter Papers

    A standard grade filter used for monitoring specific contaminants in the atmosphere and in soil testing. A standard grade filter used for monitoring specific contaminants in the atmosphere and in soil testing. These cellulose filters are used in qualitative analytical techniques to determine and...

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