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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 (137)

Qualitative Filter Papers/ Grade 1291 / 580 x 580 mm Sheets

$265.00

100 Pieces
Grade
1291
Weight
84 g/m²
Qualitative Filter Papers/ Grade 1288 / 40.5 mm Discs

$7.10

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

$9.60

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

$8.50

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

$9.60

100 Pieces
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

Carte da filtro per il laboratorio e l’industria
it 6.3 MB
Papiers filtres pour les laboratoires et l’industrie
fr 6.3 MB
Filter Papers for the Laboratory and Industry
en 6.4 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 8.2 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.