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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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Qualitative Filter Papers/ Grade 1289 / 45 mm Discs
Filter Diameter
⌀ 45 mm

  • Made of refined pulp and cotton linters with an > 95% α-celluloose content,
  • Ash content < 0,1% according to DIN 54370
  • Wet-strengthened


Filter Papers for the Laboratory and Industry
en 8.3 MB
Papiers filtres pour les laboratoires et l’industrie
fr 10.7 MB
Carte da filtro per il laboratorio e l’industria
it 9.0 MB
zh 19.0 MB


Laboratory Filtration Products
en 21.8 MB
High-purity, Qualitative Filter Paper

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.