Zenpore Qualitative Grade 2 Filter Paper

zenpore qualitative grade 2

  • HIGH RETENTION : Retains fine crystalline particles (5~10 μm)
  • AGRICULTURE : Soil prefiltration, fertilizer analysis, nutrient absorption in seed tests
  • BREWING : Beer and malt analysis, removal of turbidity in wort and yeast filtration
  • AIR / GAS FILTRATION : Pollution monitoring of specific atmospheric contaminants, smoke

Equivalent to Whatman grade 2/2V, 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 purity alpha-cellulose cotton, this standard qualitative lab filter is not intended for ashing.

Flat Grade 2 range Quadrant Grade 2 range Fluted Grade 2 range


  • science : General filtration in the 8 μm 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 : medium-slow
  • retention : 5~10 micron
  • speed : 40~45 s (10ml DIN 53137)
  • thickness : 160 mm
  • weight : 86 g/m²
  • ash : 0.1%

Flat Discs

Flat Discs are suitable for gravity and Büchner low suction vacuum filtration.

∅ 70 mm ∅ 90 mm ∅ 110 mm ∅ 125 mm ∅ 150 mm ∅ 185 mm ∅ 240 mm

buy ST002-70

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Folded Discs

  • PRE FOLDED QUADRANTS : Save time with funnel-ready quarter folded filter paper
  • FASTER FILTRATION : Prepleated filter papers improve the flow and don't need folding
  • LONGER USE : With more surface area, fluted filter papers increase loading capacity

Quadrant Folded and Fluted Filters saves folding time when filtration is done repetitively. Pre-Pleated Fluted Filters also reduce filtration time by increasing the active filtration surface of the filter.
Both are suitable for gravity filtration in standard funnels. For suction filtration, use flat disks instead.

Folding Type ∅ 125 mm ∅ 150 mm ∅ 185 mm ∅ 240 mm
Quadrant Folded
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Fluted Pleating
buy ST002-125v

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buy ST002-240v