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Quantitative Filter Paper

These filter papers are used for quantitative and gravimetric analyses as well as for pressure or vacuum filtration. They are made out of 100 % cotton linters with an α-cellulose content of > 98 % and are acid-washed to make the papers ashless and achieve high purity.

   

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Products (124)

240 mm White Dot Quantitative Folded Filter Papers / Grade 389

$125.00

Grade
389
Filter Format
Folded
125 mm Red Dot Quantitative Folded Filter Papers / Grade 392

$49.00

Grade
392
Filter Format
Folded
185 mm Yellow Dot Quantitative Folded Filter Papers / Grade 389 F

$79.00

Grade
389 F
Filter Format
Folded
47 mm Black Dot Quantitative Filter Paper Discs / Grade 388

$10.00

Grade
388
Filter Format
Discs
30 mm White Dot Quantitative Filter Paper Discs / Grade 389

$8.50

Grade
389
Filter Format
Discs

Grade

Weight

g/m²

Thickness

(mm)

Filtration Time (s)

Particle
retention (µm)

Precipitates

Properties

388

(black dot)

84

0.21

10

12 - 15

Coarse crystalline

Fast filtration

389

(white dot)

84

0.19

20

8 - 12

Medium-fine crystalline

Medium-fast filtration

389 F

(yellow dot)

84

0.19

20

8 - 12

Medium-fine crystalline

Medium-fast filtration, fat-free

392

(red dot)

84

0.17

50

5 - 8

Fine crystalline

Medium-slow filtration

390

(green dot)

84

0.16

100

3 - 5

Fine crystalline

Slow filtration

391

(blue dot)

84

0.15

180

2 - 3

Very fine crystalline

Very slow filtration

393

(purple dot)

100

0.18

300

1 - 2

Very fine crystalline

Very slow filtration

Brochure

Filter Papers for the Laboratory and Industry
en 9.4 MB
Papiers filtres pour les laboratoires et l'industrie
fr 2.0 MB
Carte da filtro per il laboratorio e l'industria
it 1.9 MB
宣传手册:实验室过滤产品精简目录
zh 19.0 MB

Catalog

Laboratory Filtration Products
en 21.8 MB
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.

Wet-strengthened Filter Papers for Qualitative Analyses

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%.