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45 mm Blue Dot Quantitative Filter Paper Discs / Grade 391

These 45 mm diameter very slow filtering, blue dot filter paper discs 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.

Item no.:  FT-3-104-045

Price:  $10.00

Availability (ex works):  For more information please log in

  • Made of 100 % cotton linters
  • Ash-free (ash content ≤ 0.01 % according to DIN 540370)
  • Wet-strengthened
  • Color-coded box for easy selection
  • Very slow filtering
  • Fine-pore
  • 100 discs per pack

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 6.4 MB
宣传手册:实验室过滤产品精简目录
zh 19.0 MB

Catalog

Laboratory Filtration Products (US and Canada)
en 9.6 MB
Laboratory Filtration Products
en 21.9 MB

Applications

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

Dimensions

  • Filter Diameter
    ⌀ 45 mm
  • Thickness
    0.15 mm

Features

  • Color-coded Dot
    Blue dot: Very slow filtering, fine-pore, very dense, ash-free, wet-strengthened

Materials of Construction

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

Physicochemical Information

  • Grade
    391
  • Precipitations
    Very fine crystalline
  • Retention Rate
    2–3 µm

Product Information

  • Filter Type
    Quantitative Filter Papers
  • Pack Size
    100
  • Packaging
    Non-sterile, bulk packed
  • Primary Product Type
    Filters

Specifications

  • Filter Format
    Discs
  • Filter Paper/Membrane Color
    White
  • Filtration Time
    180 s
  • Specifications
    Fine-pore, dense, very slow filtering

Weights

  • Weight
    84 g/m²