GRADE 1 Q QUADRANT Qualitative Filter Paper
Equivalent to Whatman grade 1 FF, this pre-folded filter paper is commonly used in labs where 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 : Routine qualitative analytical separations and liquid clarification in labs
food : Solid foodstuffs separation and liquid extraction, fat content determination
beverage : Analysis and filtration of dense liquids like fruit pulps, musts, syrups, oil or plant extracts
agriculture : Soil analysis and seed testing
environment : Medium particles collection for pollution monitoring (stain intensity)
education : Basic qualitative separations teaching and paper chromatographyMEDIUM RETENTION
Retains medium-fine crystalline precipitates like:
Sulfates (Pb, coarse form of Ba and Ca)
Carbonates (Ba, Ca)
Phosphates (Al, Pb, Struvite)
Chromates (Fe, As, Pb)
Ca Oxalate (hot), Pb Oxide
paper : pure cotton cellulose
flow : medium
retention : 10~15 μm (medium)
speed : 30~35 s (10ml DIN 53137)
size : ⌀ 185 mm
thickness : 150 μm
weight : 86 g/m²
ash : 0.1%
qty : 50 discsPRE-FOLDED
These Quadrant Folded Filters saves folding time when filtration is done repetitively.
Use our pleating equivalent ST001-185v 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.