Paper filter

Pleated filters, round filters, and filter paper sheets made of cellulose

Retention range: 8 - 12 µm
Basis weight: 65 g/m²
Filtration speed (10 ml/s): 20
Ash content: < 0.1%
Medium-fast to fast filtering
Suitable for medium-fine crystalline precipitation
Semi-open fiber structure

Cellulose filters are ideal for general filtration tasks in laboratories, factories, and hobby applications

Ideal for filtering liqueurs and fruit juices
Used for preparing filter coffee or tea using chemistry lab methods

Round/Disc filters (Grade 3hw)

Used for vacuum filtration
To separate solids from liquids or gases
In biology laboratories, to keep plant parts moist during preparative work

Filter paper sheets (Smooth: Grade 3hw, or Creped: 601/N, 58 x 58 cm)

Cost-effective for producing filters in special sizes
Used as a work surface on laboratory benches, e.g., in school laboratories
As an insert in Petri dishes
As a moisture-regulating inlay in closed vessels
Used as wrapping paper to protect laboratory glassware

Advantages of creped filter paper over smooth filter paper

Larger filter surface, providing higher filtration speed, greater dirt-holding capacity, and longer service life
More efficient clarification of filtrates
Higher burst resistance due to the increased elasticity of the creped surface

Laboratory Tip for Filtration

For filtration, carefully pour the suspension into the filter along a glass rod. Avoid filling the filter to the brim
Use an Erlenmeyer flask to collect the filtrate
When filtering organic solvents, cover the funnel with a watch glass to prevent evaporation losses and reduce solvent vapor escape
Moisten the filter with the solvent used before filtration