15 cm Quadrant-Folded Filter Paper, Pre-Folded disks, Qualitative Grade 1 - ZENPORE Medium Flow 150 mm (50 discs)

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 chromatography

MEDIUM 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

SPECS

• paper : pure cotton cellulose
• flow : medium
• retention : 10~15 μm (medium)
• speed : 30~35 s (10ml DIN 53137)
• diam : 150 mm
• thickness : 150 μm
• weight : 86 g/m²
• ash : 0.1%
• qty : 50 discs

PRE-FOLDED
Those Quadrant Folded Filters saves folding time when filtration is done repetitively.
Use our pleating equivalent ST001-150v 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.