Grade 113V Pre-Pleated Filter Paper, Wet-Strengthened, 500mm Circle, 100/Pk SKU: 1213-500

Qualitative Filter Paper - 1213-500

From student teaching labs to production QC departments, qualitative filter paper remains the workhorse for routine particle separation. Pure cotton linter cellulose provides a uniform fiber matrix with consistent porosity and predictable retention across standard grade designations. In combination, consistent physical properties across the full sheet area support uniform filtration results in both gravity and vacuum applications.

Key Filter Paper Characteristics

• Wet strength sufficient for gentle handling during precipitate transfer while maintaining the rapid flow rates of qualitative grades.
• Rated at 30um particle retention, the fiber matrix provides a defined cutoff for consistent separation across analytical batches.
• Manufactured from high-purity cotton linters, qualitative filter paper provides a clean filtration surface with minimal fiber shedding.
• Standard basis weight and thickness specifications provide predictable packing density for volumetric calculations in gravity funnels.
• Strengthening treatment preserves paper structure through extended filtration runs where continuous wetting would weaken standard grades.

When your application makes the filter paper part of the measurement, the ash and weight specifications above define its analytical contribution. Rapid wetting and uniform pore distribution reduce the setup time your operators spend preparing each filtration run. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.

Diameter

500mm

Flow Speed

Fast

Folded/ Fluted/ Pleated

Yes

Grade

113V

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Basis Weight (g/ m²)

125g/m²

Particle Retention

30um

Pore Size (µm)

30

Qualitative/ Quantitative

Qualitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

Yes

Wettability

Hydrophilic

• Pigment Screening - Separates undispersed colorant particles from coating formulations during color development and QC testing.
• General Clarification - Removes suspended solids from aqueous solutions by gravity filtration for routine sample preparation.
• Paint and Coatings QC - Removes gels and undispersed pigment from coating samples prior to color measurement and viscosity testing.
• Beverage Testing - Filters wine, beer, and juice samples before clarity and color measurements in food quality control laboratories.
• Gelatin Clarification - Removes debris from gelatin solutions used in pharmaceutical capsule manufacturing and quality testing.
• Polymer Filtration - Clears particulates from polymer solutions before molecular weight determination by viscometry or GPC.