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 / ⌀ 90 mm Filter Discs
    Pieces
    100
    Item no.
    FT-3-215-090
    Grade
    292 a
    Retention Rate
    4-7 µm
    Filter Format
    Discs
    Dimensions
    N/A

    $13.40

  • Qualitative Papers/ Grade 292 a / ⌀ 320 mm Folded Filters
    Pieces
    100
    Item no.
    FT-4-215-320
    Grade
    292 a
    Retention Rate
    4–7 µm
    Filter Format
    Folded
    Dimensions
    N/A

    $116.00

  • Qualitative Papers/ Grade 132 / ⌀ 70 mm Filter Discs
    Pieces
    100
    Item no.
    FT-3-329-070
    Grade
    132
    Retention Rate
    5–7 µm
    Filter Format
    Discs
    Dimensions
    N/A

    $13.40

  • Qualitative Papers/ Grade 292 a / ⌀ 320 mm Filter Discs
    Pieces
    100
    Item no.
    FT-3-215-320
    Grade
    292 a
    Retention Rate
    4–7 µm
    Filter Format
    Discs
    Dimensions
    N/A

    $77.90

  • Qualitative Papers/ Grade 292 / ⌀ 85 mm Filter Discs
    Pieces
    100
    Item no.
    FT-3-205-085
    Grade
    292
    Retention Rate
    5–8 µm
    Filter Format
    Discs
    Dimensions
    N/A

    $13.40

  • 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 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 / ⌀ 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 / ⌀ 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 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 / ⌀ 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 / ⌀ 270 mm Filter Discs
    Pieces
    100
    Item no.
    FT-3-205-270
    Grade
    292
    Retention Rate
    5–8 µm
    Filter Format
    Discs
    Dimensions
    N/A

    $73.10

  • Qualitative Papers/ Grade 292 a / ⌀ 125 mm Filter Discs
    Pieces
    100
    Item no.
    FT-3-215-125
    Grade
    292 a
    Retention Rate
    4–7 µm
    Filter Format
    Discs
    Dimensions
    N/A

    $23.10

  • 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