Grade 1 Qualitative Filter Paper, Quadrant Folded, 125mm Circle, 500 pack SKU: 10380405

Qualitative Filter Paper - 10380405

Sample clarification before instrumental analysis starts with a filter paper that captures interfering particles without introducing extractable contamination. Pure cotton linter cellulose provides a uniform fiber matrix with consistent porosity and predictable retention across standard grade designations. Taken together, documented grade specifications provide laboratories with the technical data needed to select appropriate papers without preliminary testing.

Key Filter Paper Characteristics

• Wet strength sufficient for gentle handling during precipitate transfer while maintaining the rapid flow rates of qualitative grades.
• Standard qualitative cellulose filter paper provides reliable particle retention for gravity and vacuum filtration across routine laboratory workflows.
• Uniform fiber distribution across the sheet ensures consistent particle retention from edge to center for reproducible filtration results.
• Manufactured to a basis weight of 87g/m², each sheet delivers the documented mass consistency that gravimetric methods require.
• Pure cellulose without strengthening additives ensures the lowest possible extractable background for sensitive analytical methods.

When your application makes the filter paper part of the measurement, the ash and weight specifications above define its analytical contribution. To support this, wide retention range availability across the qualitative grade family lets you optimize each application in your sample preparation workflow. Secure your research outcomes by partnering with a filtration solution that understands your need for speed, accuracy, and reproducibility.

Diameter

125mm

Flow Speed

Medium

Folded/ Fluted/ Pleated

Yes

Grade

1

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Ash Content (%)

0.06%

Nominal Basis Weight (g/ m²)

87g/m²

Pack Count

500

Particle Retention

11um

Pore Size (µm)

11

Qualitative/ Quantitative

Qualitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Precipitation Recovery - Collects insoluble reaction products on the paper surface for subsequent washing and downstream analysis.
• Soil Extract Filtration - Clarifies soil slurries for nutrient and pH testing, removing fine particles that interfere with 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.
• Paint and Coatings QC - Removes gels and undispersed pigment from coating samples prior to color measurement and viscosity testing.
• Teaching Laboratory - Provides consistent and economical filtration media for student exercises in analytical and general chemistry.