Whatman
Grade 3459 Application-Specific Filter, Circle, 230mm, 1000/Pk SKU: 10316619

Qualitative Filter Paper - 10316619

From student teaching labs to production QC departments, qualitative filter paper remains the workhorse for routine particle separation. Smooth surface finish allows clear visual assessment of retained solids and supports clean separation of precipitates from filtrate. Ultimately, documented grade specifications provide laboratories with the technical data needed to select appropriate papers without preliminary testing.

Key Filter Paper Characteristics

• Rated at 7-14um particle retention, the fiber matrix provides a defined cutoff for consistent separation across analytical batches.
• Uniform fiber distribution across the sheet ensures consistent particle retention from edge to center for reproducible filtration results.
• Pure cellulose fiber construction delivers consistent flow rates and predictable retention for general sample clarification and preparation.
• Compatible with standard glass and plastic filter funnels, qualitative paper integrates into existing gravity filtration setups without modification.
• Smooth surface finish supports clear visual inspection of retained material and clean separation from the collected filtrate.

If your environmental monitoring program depends on sample comparability to determine trends, the production consistency of this filter paper protects your data validity. Economical unit cost at the pack quantities routine laboratories consume keeps your filtration budget aligned with actual throughput demands. Secure your research outcomes by partnering with a filtration solution that understands your need for speed, accuracy, and reproducibility.

Diameter

230mm

Flow Speed

Fast

Folded/ Fluted/ Pleated

No

Grade

3459

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Particle Retention

7-14um

Pore Size (µm)

7.0-14.0

Qualitative/ Quantitative

Qualitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• 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.
• Enzyme Clarification - Removes particulates from enzyme solutions before activity assays in biochemistry and industrial testing.
• Lysate Clarification - Separates cellular debris from crude lysates before downstream chromatographic or electrophoretic analysis.
• General Clarification - Removes suspended solids from aqueous solutions by gravity filtration for routine sample preparation.
• Botanical Extraction - Separates plant tissue debris from aqueous and solvent extracts during natural product preparation workflows.