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142 mm Yellow Dot Quantitative Filter Paper Discs / Grade 389 F

These 142 mm diameter medium-fast filtering, yellow dot filter paper discs are used for quantitative & 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.

Item no.:  FT-3-112-142

Availability:  Discontinued

 

  • Made of 100 % cotton linters
  • Ash-free (ash content ≤ 0.01 % according to DIN 54370)
  • Fat-free
  • Wet-strengthened
  • Color-coded box for easy selection
  • Medium-fast filtering
  • Medium- to wide-pore
  • 100 discs per pack

Brochure

Filter Papers for the Laboratory and Industry
en 1.5 MB
Papiers filtres pour les laboratoires et l’industrie
fr 1.4 MB
Carte da filtro per il laboratorio e l’industria
it 1.4 MB
赛多利斯 实验室过滤产品 精简目录
zh 2.9 MB

Catalog

Laboratory Filtration Products
en 17.2 MB

Applications

  • Application Area
    • Analytical Sample Preparation
    • Particle Analysis
    • Clarification

Dimensions

  • Filter Diameter
    ⌀ 142 mm

General Specifications

  • Filter Format
    Discs
  • Filter Paper/Membrane Color
    White
  • Filtration Time
    20 s
  • Grade
    389 F
  • Specifications
    • Medium- to wide-pore, medium fast filtering
    • medium fast filtering
  • Thickness
    0.19 mm

Materials of Construction

  • Filter Material
    100 % Cotton Linters (> 98 % alpha-cellulose; ash-free)

Physicochemical Information

  • Precipitations
    Medium-fine crystalline
  • Retention Rate
    8–12 µm

Product Information

  • Filter Type
    Quantitative Filter Papers