Grade 2589 a Filter Paper for Technical Use, Circle, 140 mm, 500/Pk SKU: 10343630

Qualitative Filter Paper - 10343630

Gravity filtration setups require paper that wets uniformly, seats flat in funnels, and retains particles at the rated threshold. Natural cellulose wettability eliminates the pre-wetting step required by hydrophobic membranes in aqueous sample filtration. As a result, lot-level verification of retention, thickness, and ash content ensures predictable performance when scaling from method development to routine analysis.

Key Filter Paper Characteristics

• Standard basis weight and thickness specifications provide predictable packing density for volumetric calculations in gravity funnels.
• Compatible with standard glass and plastic filter funnels, qualitative paper integrates into existing gravity filtration setups without modification.
• Manufactured to a basis weight of 200g/m², each sheet delivers the documented mass consistency that gravimetric methods require.
• Standard qualitative cellulose filter paper provides reliable particle retention for gravity and vacuum filtration across routine laboratory workflows.
• Wet strength sufficient for gentle handling during precipitate transfer while maintaining the rapid flow rates of qualitative grades.

When your multi-site study requires comparable data across laboratories, papers manufactured to tight documented specifications ensure your results align. In particular, sheet-to-sheet consistency means your training investment carries forward as new staff learn the same predictable filtration behavior. 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

140mm

Flow Speed

Fast

Folded/ Fluted/ Pleated

No

Grade

2589A

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Basis Weight (g/ m²)

200g/m²

Particle Retention

Medium

Pore Size (µm)

6.0-12.0

Qualitative/ Quantitative

Qualitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

Yes

Wettability

Hydrophilic

• Gelatin Clarification - Removes debris from gelatin solutions used in pharmaceutical capsule manufacturing and quality testing.
• Beverage Testing - Filters wine, beer, and juice samples before clarity and color measurements in food quality control laboratories.
• General Clarification - Removes suspended solids from aqueous solutions by gravity filtration for routine sample preparation.
• Pigment Screening - Separates undispersed colorant particles from coating formulations during color development and QC testing.
• Precipitation Recovery - Collects insoluble reaction products on the paper surface for subsequent washing and downstream analysis.
• Lysate Clarification - Separates cellular debris from crude lysates before downstream chromatographic or electrophoretic analysis.