[15 cm diameter]

[24 cm diameter]

[18.5 cm diameter]

[12.5 cm diameter]

GRADE 2 Q QUADRANT Qualitative Filter Paper
Equivalent to Whatman grade 2 FF, this laboratory filter paper is widely used for standard fine filtration when you need to separate a solid or precipitate from the filtrate.
Made from high alpha-cellulose cotton, this standard lab filter is not intended for ashing.

APPLICATIONS

• science : General filtration in the 8 ?m range, clarification of cloudy suspension in labs
• food : Determination of total fat content in foodstuff and dairy, unsaponifiable fraction in fats and oils (fluted)
• beverage : Beer and malt analysis, removal of turbidity from wort and removal of yeast after fermentation (fluted)
• agriculture : Prefiltration of soil, hold nutrient in plant growth trials
• environment : Air polution monitoring of specific atmospheric contaminants and black smoke

• HIGH RETENTION
  Retains fine crystalline and organic precipitates around 8μm like:

  • Metal Sulfides (Cd, Ni, Zn, Fe, Pb, Mn, Ag, As)
  • Ba Sulfate, Pb Chromate, Mg oxide
  • Ca Oxalate (cold), Ca Fluoride, Pb Dioxide
    • paper : pure cotton cellulose
    • flow : slow
    • retention : 5~10 μm (fine)
    • speed : 40~45 s (10ml DIN 53137)
    • size : ⌀ 150 mm
    • thickness : 160 μm
    • weight : 86 g/m²
    • ash : 0.1%
    • qty : 50 discs

      PRE-FOLDED
      These Quadrant Folded Filters saves folding time when filtration is done repetitively.
      Use our pleating equivalent ST002-150v for even faster filtration.
      Suitable for gravity filtration in standard funnels, not vacuum.

      EQUIVALENCE & SIZE
      See the cross-reference table and size diagrams in the photos to choose the appropriate reference and diameter of your circles.