Grade 3 Qualitative Filter Paper, Standard, 90mm Circle, 100/Pk SKU: 1003-090

Qualitative Filter Paper - 1003-090

From student teaching labs to production QC departments, qualitative filter paper remains the workhorse for routine particle separation. Controlled fiber density produces documented flow rate and retention characteristics that remain consistent across production lots. To this end, from fiber selection through final inspection, the manufacturing process ensures every sheet meets the performance specifications of its grade.

Key Filter Paper Characteristics

• Standard cellulose construction provides reliable performance for gravity filtration and light vacuum applications.
• Controlled ash level at 0.06% ensures inorganic residue after ignition remains within the acceptable range for gravimetric procedures.
• Pure cellulose fiber construction delivers consistent flow rates and predictable retention for general sample clarification and preparation.
• At 185g/m² nominal basis weight, the paper provides the mass uniformity needed for reproducible gravimetric determinations.
• At 6um rated retention, the fiber matrix captures particles above the threshold while allowing smaller materials to pass through.

When your application makes the filter paper part of the measurement, the ash and weight specifications above define its analytical contribution. Broad grade availability lets you match retention, flow rate, and thickness to each specific application in your method library. Elevate the quality of your analytical data today by standardizing on a filtration product built to meet the exact specifications of your applications.

Diameter

90mm

Flow Speed

Slow

Folded/ Fluted/ Pleated

No

Grade

3

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Ash Content (%)

0.06%

Nominal Basis Weight (g/ m²)

185g/m²

Pack Count

100

Particle Retention

6um

Pore Size (µm)

6

Qualitative/ Quantitative

Qualitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Pigment Screening - Separates undispersed colorant particles from coating formulations during color development and QC testing.
• Paint and Coatings QC - Removes gels and undispersed pigment from coating samples prior to color measurement and viscosity testing.
• 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.
• Botanical Extraction - Separates plant tissue debris from aqueous and solvent extracts during natural product preparation workflows.
• Enzyme Clarification - Removes particulates from enzyme solutions before activity assays in biochemistry and industrial testing.