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Qualitative Papers/ Grade 1291

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-cellulose content, are very pure with an ash content < 0.1%.

Item no.:  FT-2-209-580580

Availability:  On Request

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

Brochure

宣传手册:实验室过滤产品精简目录
zh 19.0 MB
Carte da filtro per il laboratorio e l’industria
it 9.0 MB
Papiers filtres pour les laboratoires et l’industrie
fr 10.7 MB
Filter Papers for the Laboratory and Industry
en 9.1 MB

Catalog

Laboratory Filtration Products (US and Canada)
en 9.6 MB

Product properties

  • Grade
    1291
  • Primary Product Type
    Filters
  • Color
    White
  • Material
    Refined pulp and linters, ash-free
  • Filter Format
    Sheets
  • Filter Type
    Qualitative Filter Papers
  • Dimensions
    580 mm × 580 mm
  • Retention Rate
    2–3 µm
  • Pack Size
    100
  • Packaging
    Non-sterile, bulk packed
  • Weight
    84 g/m²

Technical attributes

  • Specifications
    Fine-pore, dense, very slow filtering
  • Filter Material
    Cotton Linters and Refined Pulp (> 95 % alpha-cellulose)
  • Precipitations
    Very fine crystalline
  • Thickness
    0.15 mm
  • Area of Application
    • Clarification
    • Analytical Sample Preparation
    • Particle Analysis
  • Filtration Time
    180 s