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

$12.80

Qualitative Papers/ Grade 292 / ⌀ 70 mm Filter Discs
100 Pieces
Item no.
FT-3-205-070
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$12.80

Qualitative Papers/ Grade 292 / ⌀ 21 mm Filter Discs
100 Pieces
Item no.
FT-3-205-021
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$9.50

Qualitative Papers/ Grade 292 / ⌀ 30 mm Filter Discs
100 Pieces
Item no.
FT-3-205-030
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$11.50

Qualitative Papers/ Grade 292 / ⌀ 25 mm Filter Discs
100 Pieces
Item no.
FT-3-205-025
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$9.50

Qualitative Papers/ Grade 292 / ⌀ 37 mm Filter Discs
100 Pieces
Item no.
FT-3-205-037
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$9.60

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

$11.50

Qualitative Papers/ Grade 292 / ⌀ 20 mm Filter Discs
100 Pieces
Item no.
FT-3-205-020
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$9.50

Qualitative Papers/ Grade 292 / ⌀ 60 mm Filter Discs
100 Pieces
Item no.
FT-3-205-060
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$11.60

Qualitative Papers/ Grade 292 / ⌀ 55 mm Filter Discs
100 Pieces
Item no.
FT-3-205-055
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$12.80

Qualitative Papers/ Grade 292 / ⌀ 50 mm Filter Discs
100 Pieces
Item no.
FT-3-205-050
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$12.80

Qualitative Papers/ Grade 292 / ⌀ 47 mm Filter Discs
100 Pieces
Item no.
FT-3-205-047
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$11.60

Qualitative Papers/ Grade 292 / ⌀ 125 mm Filter Discs
100 Pieces
Item no.
FT-3-205-125
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$22.00

Qualitative Papers/ Grade 292 / ⌀ 500 mm Filter Discs
100 Pieces
Item no.
FT-3-205-500
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$255.00

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

$69.60

Qualitative Papers/ Grade 292 / ⌀ 185 mm Filter Discs
100 Pieces
Item no.
FT-3-205-185
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$44.10

Qualitative Papers/ Grade 292 / ⌀ 150 mm Filter Discs
100 Pieces
Item no.
FT-3-205-150
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$30.20

Qualitative Papers/ Grade 292 / ⌀ 240 mm Filter Discs
100 Pieces
Item no.
FT-3-205-240
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$69.60

Qualitative Papers/ Grade 292 / ⌀ 175 mm Filter Discs
100 Pieces
Item no.
FT-3-205-175
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$40.60

Qualitative Papers/ Grade 292 / ⌀ 90 mm Filter Discs
100 Pieces
Item no.
FT-3-205-090
Grade
292
Retention Rate
5–8 µm
Filter Format
Discs
Dimensions
N/A

$12.80

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%.