GRADE 1 STANDARD Qualitative Filter Paper
Equivalent to Whatman grade 1, this laboratory 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 : 125 mm
- thickness : 150 μm
- weight : 86 g/m²
- ash : 0.1%
- qty : 100 discs
PLAIN-DISCS
Those Flat Discs are suitable for gravity and Buchner low suction vacuum filtration.
The same affordable filters are also available funnel-ready as ST001-125q (folding) or ST001-125v (pleating).
EQUIVALENCE & SIZE
See the cross-reference table and size diagrams in the photos to choose the appropriate reference and diameter of your circles.
