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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%.

   

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Products (136)

Qualitative Filter Papers/ Grade 1288 / 40.5 mm Discs
Grade
1288
Weight
84 g/m²
Qualitative Filter Papers/ Grade 1288 / 47 mm Discs

$9.40

Grade
1288
Weight
84 g/m²
Qualitative Filter Papers/ Grade 1289 / 40 mm Discs

$8.30

Grade
1289
Weight
84 g/m²
Qualitative Filter Papers/ Grade 1289 / 47 mm Discs

$9.40

Grade
1289
Weight
84 g/m²
Qualitative Filter Papers/ Grade 1289 / 240 mm Discs

$51.00

Grade
1289
Weight
84 g/m²

Grade

Weight

(g/m²)

Thickness

(mm)

Filtration Time (s)*

Particle
retention (µm)

Precipitates

Properties

1288

84

0.21

10

12 - 15

Coarse crystalline

Fast filtration

1289

84

0.21

20

8 - 12

Medium-fine crystalline

Medium-fast filtration

1292

84

0.17

50

5 - 8

Fine crystalline

Medium-slow filtration

1290

84

0.15

100

3 - 5

Fine crystalline

Slow filtration

1291

84

0.15

180

2 - 3

Very fine crystalline

Very slow filtration

293

80

0.15

300

1 - 2

Very fine crystalline

Very slow filtration

Brochure

Filter Papers for the Laboratory and Industry
en 8.3 MB
Papiers filtres pour les laboratoires et l’industrie
fr 8.3 MB
Carte da filtro per il laboratorio e l’industria
it 8.3 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.