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-3-607-090
Grade
918
Filter Format
Discs
Dimensions
N/A
Filter Diameter
⌀ 90 mm

$58.00

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

$198.00

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

$19.70

Qualitative & Technical Papers, Smooth/ Grade 918
Pieces
100
Item no.
FT-3-607-204
Grade
918
Filter Format
Discs
Dimensions
N/A
Filter Diameter
⌀ 204 mm

$319.00

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

$31.30

Qualitative & Technical Papers, Smooth/ Grade 100/N
Piece
1
Item no.
FT-1-328-1501000
Grade
100/N
Filter Format
Reels
Dimensions
150 mm × 1,000 m
Filter Diameter
N/A

$435.00

Qualitative & Technical Papers, Smooth/ Grade 100/N
Piece
1
Item no.
FT-1-328-2401000
Grade
100/N
Filter Format
Reels
Dimensions
240 mm × 1,000 m
Filter Diameter
N/A

$568.00

Qualitative & Technical Papers, Smooth/ Grade C 140
Pieces
100
Item no.
FT-2-356-240400
Grade
C 140
Filter Format
Sheets
Dimensions
240 × 400 mm
Filter Diameter
N/A

$73.10

Qualitative & Technical Papers, Smooth/ Grade 100/N
Item no.
FT-2-328-290430
Grade
100/N
Filter Format
Sheets
Dimensions
290 × 430 mm
Filter Diameter
N/A

$423.00

Qualitative & Technical Papers, Smooth/ Grade C 140
Pieces
100
Item no.
FT-2-356-089140
Grade
C 140
Filter Format
Sheets
Dimensions
89 × 140 mm
Filter Diameter
N/A

$12.80

Qualitative & Technical Papers, Smooth/ Grade 4 b
Pieces
100
Item no.
FT-2-309-900900
Grade
4 b
Filter Format
Sheets
Dimensions
900 × 900 mm
Filter Diameter
N/A

$278.00

Qualitative & Technical Papers, Smooth/ Grade 4 b
Pieces
100
Item no.
FT-2-309-210297
Grade
4 b
Filter Format
Sheets
Dimensions
210 × 297 mm
Filter Diameter
N/A

$45.20

Qualitative & Technical Papers, Smooth/ Grade 6
Pieces
100
Item no.
FT-2-312-580580
Grade
6
Filter Format
Sheets
Dimensions
580 × 580 mm
Filter Diameter
N/A

$188.00

Qualitative & Technical Papers, Smooth/ Grade 3 m/N
Pieces
100
Item no.
FT-2-305-580580
Grade
3 m/N
Filter Format
Sheets
Dimensions
580 × 580 mm
Filter Diameter
N/A

$113.00

Qualitative & Technical Papers, Smooth/ Grade 100/N
Pieces
100
Item no.
FT-2-328-580580
Grade
100/N
Filter Format
Sheets
Dimensions
580 × 580 mm
Filter Diameter
N/A

$123.00

Qualitative & Technical Papers, Smooth/ Grade C 140
Item no.
FT-2-356-445572
Grade
C 140
Filter Format
Sheets
Dimensions
445 × 572 mm
Filter Diameter
N/A

$331.00

Qualitative & Technical Papers, Smooth/ Grade 4 b
Pieces
1,000
Item no.
FT-2-309-203203
Grade
4 b
Filter Format
Sheets
Dimensions
203 × 203 mm
Filter Diameter
N/A

$168.00

Qualitative & Technical Papers, Smooth/ Grade 4 b
Pieces
500
Item no.
FT-2-309-450450Q
Grade
4 b
Filter Format
Sheets
Dimensions
450 × 450 mm
Filter Diameter
N/A

$219.00

Qualitative & Technical Papers, Smooth/ Grade 100/N
Item no.
FT-2-328-220330
Grade
100/N
Filter Format
Sheets
Dimensions
220 × 330 mm
Filter Diameter
N/A

$190.00

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%.

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