Qualitative Filter Paper, Slow, 2-4 um, 70mm, 100/Pk SKU: CF15052

Qualitative Filter Paper - CF15052

Isolating precipitates from reaction mixtures requires a cellulose matrix that captures solid material completely without premature filter blinding. Laboratories processing dozens of samples daily need a qualitative filter paper that performs reliably from the first sheet to the last. Documented grade specifications provide laboratories with the technical data needed to select appropriate papers without preliminary testing.

Key Filter Paper Characteristics

• Standard construction provides the absorption and wicking characteristics that gravity-based filtration protocols require.
• Untreated cellulose construction provides the pure, unmodified surface appropriate for routine filtration and general sample preparation.
• Nominal ash content of ≤0.15% ensures minimal inorganic residue after ignition, protecting the accuracy of gravimetric determinations.
• At 80±5g/m² nominal basis weight, the filter medium provides the mass uniformity needed for reproducible gravimetric determinations.
• Standard basis weight and thickness specifications provide predictable packing density for volumetric calculations in gravity funnels.

When your multi-site study requires comparable data across laboratories, papers manufactured to tight documented specifications ensure your results align. In practice, sheet-to-sheet consistency means your training investment carries forward as new staff learn the same predictable filtration behavior. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.

Capacity

350uL

Diameter

70mm

Flow Speed

Slow

Folded/ Fluted/ Pleated

No

Hardened (Yes/ No)

No

Material

Cellulose

Nominal Ash Content (%)

≤0.15%

Nominal Basis Weight (g/ m²)

80±5g/m²

Pack Count

100

Particle Retention

2-4um

Pore Size (µm)

2.0-4.0

Qualitative/ Quantitative

Qualitative

Sterility

Nonsterile

Weight

0.26

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• General Clarification - Removes suspended solids from aqueous solutions by gravity filtration for routine sample preparation.
• Gelatin Clarification - Removes debris from gelatin solutions used in pharmaceutical capsule manufacturing and quality testing.
• Beverage Testing - Filters wine, beer, and juice samples before clarity and color measurements in food quality control laboratories.
• Paint and Coatings QC - Removes gels and undispersed pigment from coating samples prior to color measurement and viscosity testing.
• Precipitation Recovery - Collects insoluble reaction products on the paper surface for subsequent washing and downstream analysis.
• Lysate Clarification - Separates cellular debris from crude lysates before downstream chromatographic or electrophoretic analysis.