Grade 5 Qualitative Filter Paper, Standard, 320mm Circle, 100/Pk SKU: 1005-320

Qualitative Filter Paper - 1005-320

Routine quality control filtration across multiple product lines requires a filter paper that delivers consistent retention without batch-to-batch performance drift. Available in circles, sheets, and prefolded formats to match specific funnel geometries and sample processing workflows. Rigorous quality control at every production stage ensures physical properties align with published grade specifications before distribution.

Key Filter Paper Characteristics

• Controlled ash level at 0.06% ensures inorganic residue after ignition remains within the acceptable range for gravimetric procedures.
• Nominal basis weight of 100g/m² reflects the fiber density that determines flow rate, retention, and mechanical handling characteristics.
• Medium porosity cellulose matrix captures suspended solids while maintaining the throughput needed for efficient batch processing.
• Wet strength sufficient for gentle handling during precipitate transfer while maintaining the rapid flow rates of qualitative grades.
• Standard cellulose construction eliminates chemical treatment steps that could introduce background contamination in sensitive analytical methods.

If your teaching or research laboratory processes high volumes of routine samples, the documented flow rates above translate directly to throughput. For this purpose, standard cellulose chemistry eliminates the need for specialized disposal procedures your general laboratory filtration generates. 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

320mm

Flow Speed

Slow

Folded/ Fluted/ Pleated

No

Grade

5

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Ash Content (%)

0.06%

Nominal Basis Weight (g/ m²)

100g/m²

Particle Retention

2.5um

Pore Size (µm)

2.5

Qualitative/ Quantitative

Qualitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Botanical Extraction - Separates plant tissue debris from aqueous and solvent extracts during natural product preparation workflows.
• Polymer Filtration - Clears particulates from polymer solutions before molecular weight determination by viscometry or GPC.
• 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.
• 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.