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Quantitative Papers/ Grade 391

These filter papers are used for quantitative and gravimetric analyses as well as for pressure or vacuum filtration. They are made out of 100 % cotton linters with an α-cellulose content of > 98 % and are acid-washed to make the papers ashless and achieve high purity.

Order Number:  FT-4-104-185

Availability:  On Request

  • Made of 100 % cotton linters
  • Ash-free (ash content ≤ 0.01 % according to DIN 540370)
  • Wet-strengthened
  • Color-coded box for easy selection

Brochure

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
Filter Papers for the Laboratory and Industry
en 9.1 MB

Catalog

Laboratory Filtration Products (US and Canada)
en 9.6 MB

Product properties

  • Colour
    White
  • Dimensions
    185 mm
  • Weight
    84 g/m²
  • Primary Product Type
    Filters
  • Grade
    391
  • Material
    Refined pulp and linters, ash-free
  • Filter Type
    Quantitative Filter Papers
  • Filter Format
    Folded
  • Packaging
    Non-sterile, bulk packed
  • Pack size
    100

Technical attributes

  • Thickness
    0.15 mm
  • Filtration time
    180 s
  • Particle retention
    2-3 µm
  • Filter material
    100 % Cotton Linters (> 98 % alpha-cellulose; ash-free)
  • Specifications
    Fine-pore, dense, very slow filtering
  • Color-coded dot
    Blue
  • Area of application
    Analytical Sample Preparation` Particle Analysis` Clarification
  • Precipitations
    Very fine crystalline

No accessories & consumables found