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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 6.4 MB
Carte da filtro per il laboratorio e l’industria
it 6.4 MB
Filter Papers for the Laboratory and Industry
en 6.4 MB

Catalog

Laboratory Filtration Products (US and Canada)
en 9.6 MB
Laboratory Filtration Products
en 14.3 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