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Qualitative Papers/ Grade 131

These filter papers are especially suitable for qualitative analyses that require a low ash content.

Item no.:  FT-4-351-110

Availability:  On Request

  • Pure cotton linters or cotton linters with refined pulp
  • No additives, such as wet-strengthening agents


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


Laboratory Filtration Products (US and Canada)
en 9.6 MB

Product properties

  • Color
  • Primary Product Type
  • Grade
  • Filter Type
    Qualitative Filter Papers
  • Filter Format
  • Packaging
    Non-sterile, bulk packed
  • Pack Size
  • Weight
    80 g/m²
  • Dimensions
    110 mm
  • Retention Rate
    3–5 µm

Technical attributes

  • Filter Material
    Cotton Linters and Refined Pulp (low-phosphate and potassium; < 0.02 % ash)
  • Specifications
    Narrow-pore, dense, slow filtering
  • Filtration Time
    100 s
  • Area of Application
    • Clarification
    • Analytical Sample Preparation
    • Particle Analysis
  • Precipitations
    Fine crystalline
  • Thickness
    0.16 mm