Smooth Filter Papers for Qualitative & Technical Analyses

These filter papers are used for routine analyses like clarification, determination of substances, but also as discs with a center 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. White and bright particles can be easily detected with the black paper grade 918, due to the color contrast for example for the detection of fluorine or silicon in water or the detection of mycelium in mildews.

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Products (196)

  • Qualitative & Technical Papers, Smooth/ Grade 3 S/h
    Pieces
    50
    Item no.
    FT-3-307-270
    Grade
    3 S/h
    Filter Format
    Discs
    Dimensions
    N/A
    Filter Diameter
    ⌀ 270 mm

    $60.90

  • Qualitative & Technical Papers, Smooth/ Grade 918
    Pieces
    100
    Item no.
    FT-3-607-090
    Grade
    918
    Filter Format
    Discs
    Dimensions
    N/A
    Filter Diameter
    ⌀ 90 mm

    $60.90

  • Qualitative & Technical Papers, Smooth/ Grade 100/N
    Pieces
    100
    Item no.
    FT-3-328-150
    Grade
    100/N
    Filter Format
    Discs
    Dimensions
    N/A
    Filter Diameter
    ⌀ 150 mm

    $20.70

  • Qualitative & Technical Papers, Smooth/ Grade 3 w
    Pieces
    100
    Item no.
    FT-3-308-055
    Grade
    3 w
    Filter Format
    Discs
    Dimensions
    N/A
    Filter Diameter
    ⌀ 55 mm

    $9.50

  • Qualitative & Technical Papers, Smooth/ Grade 4 b
    Pieces
    100
    Item no.
    FT-4-309-185
    Grade
    4 b
    Filter Format
    Folded
    Dimensions
    N/A
    Filter Diameter
    ⌀ 185 mm

    $46.30

  • Qualitative & Technical Papers, Smooth/ Grade 3 hw
    Pieces
    100
    Item no.
    FT-3-303-385
    Grade
    3 hw
    Filter Format
    Discs
    Dimensions
    N/A
    Filter Diameter
    ⌀ 385 mm

    $96.20

  • Qualitative & Technical Papers, Smooth/ Grade 100/N
    Pieces
    100
    Item no.
    FT-4-328-240
    Grade
    100/N
    Filter Format
    Folded
    Dimensions
    N/A
    Filter Diameter
    ⌀ 240 mm

    $62.20

  • Qualitative & Technical Papers, Smooth/ Grade 3 S/h
    Pieces
    100
    Item no.
    FT-4-307-240
    Grade
    3 S/h
    Filter Format
    Folded
    Dimensions
    N/A
    Filter Diameter
    ⌀ 240 mm

    $612.00

  • Qualitative & Technical Papers, Smooth/ Grade C 140
    Pieces
    100
    Item no.
    FT-4-356-240
    Grade
    C 140
    Filter Format
    Folded
    Dimensions
    N/A
    Filter Diameter
    ⌀ 240 mm

    $359.00

  • Qualitative & Technical Papers, Smooth/ Grade 4 b
    Pieces
    100
    Item no.
    FT-4-309-240
    Grade
    4 b
    Filter Format
    Folded
    Dimensions
    N/A
    Filter Diameter
    ⌀ 240 mm

    $76.80

  • Qualitative & Technical Papers, Smooth/ Grade 3 hw
    Pieces
    100
    Item no.
    FT-3-303-100
    Grade
    3 hw
    Filter Format
    Discs
    Dimensions
    N/A
    Filter Diameter
    ⌀ 100 mm

    $12.20

  • Qualitative & Technical Papers, Smooth/ Grade 6
    Pieces
    100
    Item no.
    FT-3-312-125
    Grade
    6
    Filter Format
    Discs
    Dimensions
    N/A
    Filter Diameter
    ⌀ 125 mm

    $18.30

  • Qualitative & Technical Papers, Smooth/ Grade 3 hw
    Pieces
    100
    Item no.
    FT-3-303-040
    Grade
    3 hw
    Filter Format
    Discs
    Dimensions
    N/A
    Filter Diameter
    ⌀ 40 mm

    $9.50

  • Qualitative & Technical Papers, Smooth/ Grade 100/N
    Pieces
    100
    Item no.
    FT-4-328-150
    Grade
    100/N
    Filter Format
    Folded
    Dimensions
    N/A
    Filter Diameter
    ⌀ 150 mm

    $56.10

  • Qualitative & Technical Papers, Smooth/ Grade 3 m/N
    Pieces
    100
    Item no.
    FT-4-305-150
    Grade
    3 m/N
    Filter Format
    Folded
    Dimensions
    N/A
    Filter Diameter
    ⌀ 150 mm

    $47.50

  • Results per page: | |

    Smooth Filter Papers for Qualitative & Technical Analyses

    Grade

    Weight
    (g/m2)

    Thickness
    (mm)

    Filtration Time (s)

    Particle
    retention (µm)

    Wet Bursting
    Strength (kPa)

    Color

    Properties

    6

    80

    0.17

    15

    10 - 13

    ≥ 30

    White

    Medium-fast filtration

    3 w

    65

    0.14

    15

    9 - 13

    ≥ 15

    White

    Medium-fast filtration

    3 hw

    65

    0.14

    20

    8 - 12

    ≥ 15

    White

    Medium-fast filtration

    C 140

    140

    0.30

    20

    7 - 11

    > 50

    White

    Medium-fast filtration

    4 b

    75

    0.15

    22

    8 - 12

    ≥ 30

    White

    Medium-fast filtration

    3 m/N

    65

    0.14

    30

    7 - 10

    ≥ 30

    White

    Medium-fast filtration

    100/N

    85

    0.18

    30

    6 - 8

    ≥ 80

    White

    Medium-fast filtration, low ammonium, potassium & sodium content

    918

    85

    0.17

    45

    8 - 10

    n.a.

    Black

    Medium-fast to slow filtration, black paper, stained with a sulfur coloring

    3 S/h

    200

    0.36

    55

    5 - 7

    ≥ 15

    White

    Medium-fast to slow filtration


  • High-purity, Qualitative Filter Papers
    Item no.
    M_Qualitative_Filter_Papers_Highpurity

    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.

  • Crêped Filter Papers for Qualitative & Technical Analyses
    Item no.
    M_Qualitative_Technical_Papers_Creped

    Crêped filter papers are mostly used for the rapid filtration of relatively coarse precipitates; because of their crêped structure they provide a larger filtration area than smooth filter papers. Grades with a wet burst resistance > 30 kPa are referred to as wet-strengthened and are therefore suitable for pressure or vacuum 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%.