Whatman
Shark Skin Filter Paper for Technical Use, 125mm Circle, 100/Pk SKU: 10347511

Qualitative Filter Paper - 10347511

Gravity filtration methods for removing suspended solids require filter paper that seats cleanly in funnels and retains particles consistently. Smooth surface finish allows clear visual assessment of retained solids and supports clean separation of precipitates from filtrate. On this basis, controlled manufacturing delivers the documented retention, flow rate, and physical consistency that analytical and preparative filtration methods require.

Key Filter Paper Characteristics

• Available in precut circles and sheet stock to match funnel sizes and custom cutting requirements across laboratory applications.
• Particle retention rating of 8-12um defines the separation threshold for the application, determining which solids are captured and which pass through.
• Uniform fiber distribution across the sheet ensures consistent particle retention from edge to center for reproducible filtration results.
• Medium porosity cellulose matrix captures suspended solids while maintaining the throughput needed for efficient batch processing.
• Resin treatment provides the tensile strength to resist tearing under vacuum, even when processing large sample volumes.

Reporting filtration parameters alongside your analytical results demands documented grade, retention, and lot traceability for reviewer confidence. With this in mind, 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.

Diameter

125mm

Flow Speed

Medium Slow

Folded/ Fluted/ Pleated

No

Grade

Shark Skin

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Basis Weight (g/ m²)

44g/m²

Particle Retention

8-12um

Pore Size (µm)

8.0-12.0

Qualitative/ Quantitative

Qualitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

Yes

Wettability

Hydrophilic

• Botanical Extraction - Separates plant tissue debris from aqueous and solvent extracts during natural product preparation workflows.
• Precipitation Recovery - Collects insoluble reaction products on the paper surface for subsequent washing and downstream analysis.
• Paint and Coatings QC - Removes gels and undispersed pigment from coating samples prior to color measurement and viscosity testing.
• Polymer Filtration - Clears particulates from polymer solutions before molecular weight determination by viscometry or GPC.
• Gelatin Clarification - Removes debris from gelatin solutions used in pharmaceutical capsule manufacturing and quality testing.
• General Clarification - Removes suspended solids from aqueous solutions by gravity filtration for routine sample preparation.