Grade 287 1/2 Qualitative Filter Paper Folded (Prepleated), 185mm, 50/Pk SKU: 10310247

Qualitative Filter Paper - 10310247

From student teaching labs to production QC departments, qualitative filter paper remains the workhorse for routine particle separation. Medium retention grades capture suspended solids while maintaining flow rates suitable for routine laboratory sample throughput requirements. Together, certificate of conformance documentation accompanies each lot, providing traceability for quality systems and regulatory audit requirements.

Key Filter Paper Characteristics

• At 161g/m² nominal basis weight, the paper provides the mass uniformity needed for reproducible gravimetric determinations.
• Smooth surface finish supports clear visual inspection of retained material and clean separation from the collected filtrate.
• Non-strengthened paper is appropriate for routine gravity filtration where prolonged vacuum exposure is not part of the workflow.
• Nominal retention of 1um provides the particle size cutoff appropriate for the analytical or preparative separation method.
• Standard qualitative cellulose filter paper provides reliable particle retention for gravity and vacuum filtration across routine laboratory workflows.

When your quality system requires documented specifications for every consumable, the grade data above provides the traceability your auditors expect. Wide retention range availability across the qualitative grade family lets you optimize each application in your sample preparation workflow. Take control of your sample preparation variables and ensure that your data reflects the true nature of your work, rather than the quality of your consumables.

Diameter

185mm

Flow Speed

Medium Slow

Folded/ Fluted/ Pleated

Yes

Grade

287

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Basis Weight (g/ m²)

161g/m²

Particle Retention

1um

Qualitative/ Quantitative

Qualitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Soil Extract Filtration - Clarifies soil slurries for nutrient and pH testing, removing fine particles that interfere with analysis.
• Enzyme Clarification - Removes particulates from enzyme solutions before activity assays in biochemistry and industrial testing.
• Lysate Clarification - Separates cellular debris from crude lysates before downstream chromatographic or electrophoretic analysis.
• General Clarification - Removes suspended solids from aqueous solutions by gravity filtration for routine sample preparation.
• Precipitation Recovery - Collects insoluble reaction products on the paper surface for subsequent washing and downstream analysis.
• Beverage Testing - Filters wine, beer, and juice samples before clarity and color measurements in food quality control laboratories.