Your Cart (0)
Thumbnail Filmstrip of Qualitative Filter Paper, Grade 04, 20um, 240mm, Cellulose, Very Fast, 100/Pk Images
Featuring a high-purity cellulose medium engineered for very fast filtration, this Grade 04 qualitative filter paper provides 20.0um nominal particle retention across 240mm circles supplied 100 per pack. The coarse, open structure delivers an extremely high flow rate, making it the fastest paper in the qualitative range and well suited to routine sample cleanup where speed is the priority and the collection of fine particles is not critical.
Key Filter Paper Characteristics
- Nominal particle retention of 20.0um targets coarse particulates and gelatinous precipitates such as iron hydroxide, aluminium hydroxide, and chromium hydroxide.
- Very fast flow rate minimizes filtration time for high-throughput routine work and heavily loaded samples.
- Hydrophilic cellulose construction wets readily with aqueous samples for consistent, dependable performance.
- High loading capacity handles large, difficult precipitates without rapid blinding.
- Qualitative grade suited to general-purpose clarification and separations where subsequent analysis is not critical.
Key Construction Characteristics
- 240mm diameter pre-cut circles fit standard funnels for routine bench filtration.
- Nonsterile format for general laboratory use.
- Supplied 100 discs per pack for everyday consumable stocking.
This filter paper delivers reliable, repeatable clarification across routine workflows while maintaining a high flow rate under particulate load. Its coarse, open cellulose matrix provides dependable retention of coarse and gelatinous precipitates, helping protect downstream steps and preserve sample integrity.
- Color
- White
- Diameter
- 240mm
- Flow Speed
- Very Fast
- Grade
- 04
- Material
- Cellulose
- Mesh Format
- Circle
- Pack Count
- 100
- Particle Retention
- 20um
- Pore Size (µm)
- 20
- Qualitative/ Quantitative
- Qualitative
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Whatman Equivalent
- Grade 4
- Routine Sample Clarification Clarifies cloudy liquids and removes coarse particulates quickly across general laboratory workflows.
- Biological Fluid Cleanup Provides rapid routine clean-up of biological fluids and organic extracts during analysis.
- Gelatinous Precipitate Filtration Retains coarse and gelatinous precipitates such as iron hydroxide, aluminium hydroxide, and chromium hydroxide.
- Air Pollution Monitoring Supports air pollution monitoring at high flow rates where the collection of fine particles is not critical.
- Food Analysis Separates solid foodstuffs from associated or extracting liquids in routine food industry techniques.
- Buchner Funnel Filtration Handles heavily loaded samples in funnel filtration where very fast flow is required.