High-purity, Qualitative Filter Papers

These paper grades are used for analytical purposes that require a low ash content.

Grades 292 and 292a are especially suitable for soil analyses because they are low in nitrogen. For phosphate or sodium determination, we recommend grades 131 and 132.

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Products (81)

  • Qualitative Papers/ Grade 292 a / ⌀ 240 mm Filter Discs
    Pieces
    100
    Item no.
    FT-3-215-240
    Grade
    292 a
    Retention Rate
    4–7 µm
    Filter Format
    Discs
    Dimensions
    N/A

    $73.10

  • Qualitative Papers/ Grade 132 / ⌀ 385 mm Folded Filters
    Pieces
    100
    Item no.
    FT-4-329-385
    Grade
    132
    Retention Rate
    5–8 µm
    Filter Format
    Folded
    Dimensions
    N/A

    $341.00

  • Qualitative Papers/ Grade 132 / ⌀ 55 mm Filter Discs
    Pieces
    100
    Item no.
    FT-3-329-055
    Grade
    132
    Retention Rate
    5–7 µm
    Filter Format
    Discs
    Dimensions
    N/A

    $12.20

  • Qualitative Papers/ Grade 131 / ⌀ 150 mm Folded Filters
    Pieces
    100
    Item no.
    FT-4-351-150
    Grade
    131
    Retention Rate
    3–5 µm
    Filter Format
    Folded
    Dimensions
    N/A

    $53.60

  • Qualitative Papers/ Grade 132 / ⌀ 90 mm Filter Discs
    Pieces
    100
    Item no.
    FT-3-329-090
    Grade
    132
    Retention Rate
    5–7 µm
    Filter Format
    Discs
    Dimensions
    N/A

    $13.40

  • Qualitative Papers/ Grade 292 a / 580 × 580 mm Sheets
    Pieces
    100
    Item no.
    FT-2-215-580580
    Grade
    292 a
    Retention Rate
    4–7 µm
    Filter Format
    Sheets
    Dimensions
    580 × 580 mm

    $378.00

  • Qualitative Papers/ Grade 292 / ⌀ 42 mm Filter Discs
    Pieces
    100
    Item no.
    FT-3-205-042
    Grade
    292
    Retention Rate
    5–8 µm
    Filter Format
    Discs
    Dimensions
    N/A

    $12.10

  • Qualitative Papers/ Grade 131 / ⌀ 125 mm Folded Filters
    Pieces
    100
    Item no.
    FT-4-351-125
    Grade
    131
    Retention Rate
    3–5 µm
    Filter Format
    Folded
    Dimensions
    N/A

    $53.60

  • Qualitative Papers/ Grade 131 / ⌀ 110 mm Folded Filters
    Pieces
    100
    Item no.
    FT-4-351-110
    Grade
    131
    Retention Rate
    3–5 µm
    Filter Format
    Folded
    Dimensions
    N/A

    $53.60

  • Qualitative Papers/ Grade 292 a / ⌀ 70 mm Filter Discs
    Pieces
    100
    Item no.
    FT-3-215-070
    Grade
    292 a
    Retention Rate
    4–7 µm
    Filter Format
    Discs
    Dimensions
    N/A

    $13.40

  • Qualitative Papers/ Grade 292 a / ⌀ 125 mm Folded Filters
    Pieces
    100
    Item no.
    FT-4-215-125
    Grade
    292 a
    Retention Rate
    4–7 µm
    Filter Format
    Folded
    Dimensions
    N/A

    $53.60

  • Qualitative Papers/ Grade 132 / ⌀ 240 mm Folded Filters
    Pieces
    100
    Item no.
    FT-4-329-240
    Grade
    132
    Retention Rate
    5–8 µm
    Filter Format
    Folded
    Dimensions
    N/A

    $98.70

  • Qualitative Papers/ Grade 132 / ⌀ 125 mm Folded Filters
    Pieces
    100
    Item no.
    FT-4-329-125
    Grade
    132
    Retention Rate
    5–8 µm
    Filter Format
    Folded
    Dimensions
    N/A

    $53.60

  • Qualitative Papers/ Grade 292 a / ⌀ 500 mm Filter Discs
    Pieces
    100
    Item no.
    FT-3-215-500
    Grade
    292 a
    Retention Rate
    4–7 µm
    Filter Format
    Discs
    Dimensions
    N/A

    $268.00

  • Qualitative Papers/ Grade 292 / 100 x 150 mm Sheets
    Pieces
    100
    Item no.
    FT-2-205-100150
    Grade
    292
    Retention Rate
    5–8 µm
    Filter Format
    Sheets
    Dimensions
    100 x 150 mm

    $25.60

  • Results per page: | |

    High-purity, Qualitative Filter Papers

    Grade

    Material

    Weight
    (g/m2)

    Thickness
    (mm)

    Wet Bursting
    Strength (kPa)

    Ash content (%)

    Particle
    retention (µm)

    Properties

    131

    Refined pulp and Linters

    80

    0.16

    20         

    <0.02

    3 - 5

    Narrow pored, slow rate of filtration

    132

    Refined pulp and Linters

    80

    0.17

    20

    <0.02

    5 - 8

    Medium pored, medium-slow rate of filtration

    292

    Cotton Linters

    87

    0.18

    5

    <0.06

    5 - 8

    Medium pored, medium-slow rate of filtration

    292a

    Cotton Linters

    97

    0.19

    5

    <0.06

    4 - 7

    Medium to narrow pored, medium-slow rate of filtration


  • Wet-strengthened Filter Papers for Qualitative Analyses
    Item no.
    M_Qualitative_Filter_Papers_wetstrengthened

    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% α-celluloose content, are very pure with an ash content < 0.1%.