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 918
Pieces
100
Item no.
FT-3-607-204
Dimensions
N/A
Filter Diameter
⌀ 204 mm
Filter Format
Discs
Grade
918

$319.00

Qualitative & Technical Papers, Smooth/ Grade 918
Pieces
1,000
Item no.
FT-3-607-030R
Dimensions
N/A
Filter Diameter
⌀ 30 mm
Filter Format
Discs
Grade
918

$198.00

Qualitative & Technical Papers, Smooth/ Grade 918
Pieces
100
Item no.
FT-3-607-055
Dimensions
N/A
Filter Diameter
⌀ 55 mm
Filter Format
Discs
Grade
918

$31.30

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

$58.00

Qualitative & Technical Papers, Smooth/ Grade 918
Pieces
100
Item no.
FT-3-607-040
Dimensions
N/A
Filter Diameter
⌀ 40 mm
Filter Format
Discs
Grade
918

$19.70

Qualitative & Technical Papers, Smooth/ Grade 3 w
Pieces
100
Item no.
FT-3-308-385
Dimensions
N/A
Filter Diameter
⌀ 385 mm
Filter Format
Discs
Grade
3 w

$106.00

Qualitative & Technical Papers, Smooth/ Grade 3 m/N
Pieces
100
Item no.
FT-3-305-055
Dimensions
N/A
Filter Diameter
⌀ 60 mm
Filter Format
Discs
Grade
3 m/N

$9.30

Qualitative & Technical Papers, Smooth/ Grade 100/N
Pieces
100
Item no.
FT-3-328-330
Dimensions
N/A
Filter Diameter
⌀ 330 mm
Filter Format
Discs
Grade
100/N

$53.40

Qualitative & Technical Papers, Smooth/ Grade 3 m/N
Pieces
100
Item no.
FT-4-305-185
Dimensions
N/A
Filter Diameter
⌀ 185 mm
Filter Format
Folded
Grade
3 m/N

$45.20

Qualitative & Technical Papers, Smooth/ Grade 3 m/N
Pieces
100
Item no.
FT-4-305-240
Dimensions
N/A
Filter Diameter
⌀ 240 mm
Filter Format
Folded
Grade
3 m/N

$74.20

Qualitative & Technical Papers, Smooth/ Grade 3 hw
Pieces
100
Item no.
FT-3-303-320
Dimensions
N/A
Filter Diameter
⌀ 320 mm
Filter Format
Discs
Grade
3 hw

$60.30

Qualitative & Technical Papers, Smooth/ Grade 3 hw
Pieces
100
Item no.
FT-3-303-085
Dimensions
N/A
Filter Diameter
⌀ 85 mm
Filter Format
Discs
Grade
3 hw

$11.50

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

$17.40

Qualitative & Technical Papers, Smooth/ Grade 3 S/h
Pieces
50
Item no.
FT-3-307-100
Dimensions
N/A
Filter Diameter
⌀ 100 mm
Filter Format
Discs
Grade
3 S/h

$11.60

Qualitative & Technical Papers, Smooth/ Grade 3 hw
Pieces
100
Item no.
FT-3-303-055
Dimensions
N/A
Filter Diameter
⌀ 55 mm
Filter Format
Discs
Grade
3 hw

$9.00

Qualitative & Technical Papers, Smooth/ Grade 100/N
Pieces
100
Item no.
FT-3-328-385
Dimensions
N/A
Filter Diameter
⌀ 385 mm
Filter Format
Discs
Grade
100/N

$158.00

Qualitative & Technical Papers, Smooth/ Grade 3 w
Pieces
100
Item no.
FT-3-308-150
Dimensions
N/A
Filter Diameter
⌀ 150 mm
Filter Format
Discs
Grade
3 w

$17.40

Qualitative & Technical Papers, Smooth/ Grade 3 hw
Pieces
100
Item no.
FT-3-303-150
Dimensions
N/A
Filter Diameter
⌀ 150 mm
Filter Format
Discs
Grade
3 hw

$17.40

Qualitative & Technical Papers, Smooth/ Grade 3 m/N
Pieces
100
Item no.
FT-4-305-110
Dimensions
N/A
Filter Diameter
⌀ 110 mm
Filter Format
Folded
Grade
3 m/N

$60.30

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


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.

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.

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%.