Qualitative Filter Paper, Slow, 2-4 um, 180mm, 100/Pk SKU: CF15057

Qualitative Filter Paper - CF15057

Laboratories processing dozens of samples daily need a qualitative filter paper that performs reliably from the first sheet to the last. Gravity filtration methods for removing suspended solids require filter paper that seats cleanly in funnels and retains particles consistently. By design, lot-level verification of retention, thickness, and ash content ensures predictable performance when scaling from method development to routine analysis.

Key Filter Paper Characteristics

• Non-hardened paper balances effective particle retention with economical unit cost for high-volume routine laboratory use.
• Wet strength sufficient for gentle handling during precipitate transfer while maintaining the rapid flow rates of qualitative grades.
• Standard wet strength is sufficient for conventional Buchner funnel and gravity filtration setups at moderate sample volumes.
• Maximum retention capability supports the most demanding analytical separations where every captured particle counts.
• Uniform fiber distribution across the sheet ensures consistent particle retention from edge to center for reproducible filtration results.

When your application makes the filter paper part of the measurement, the ash and weight specifications above define its analytical contribution. To address this, predictable retention and flow rate from a pure cellulose matrix give you a dependable filtration baseline for routine sample preparation. Elevate the quality of your analytical data today by standardizing on a filtration product built to meet the exact specifications of your applications.

Diameter

180mm

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

0.56

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Teaching Laboratory - Provides consistent and economical filtration media for student exercises in analytical and general chemistry.
• Beverage Testing - Filters wine, beer, and juice samples before clarity and color measurements in food quality control laboratories.
• Lysate Clarification - Separates cellular debris from crude lysates before downstream chromatographic or electrophoretic analysis.
• 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.
• Botanical Extraction - Separates plant tissue debris from aqueous and solvent extracts during natural product preparation workflows.