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Thumbnail Filmstrip of Qualitative Filter Paper, Grade 04, 20um Retention, 110mm, Extra Fast, 100/Pk Images
Featuring a high-purity cellulose matrix engineered for very fast filtration, this Grade 04 qualitative filter paper delivers rapid throughput with reliable retention of coarse particles and gelatinous precipitates. Each 110mm circle provides a nominal particle retention of 20um, making it well suited to routine laboratory clarification where the collection of fine particles is not critical. Supplied nonsterile in convenient packs of 100 discs.
Key Filter Paper Characteristics
- Naturally hydrophilic cellulose medium wets out quickly for fast, even filtration.
- Nominal particle retention of 20um captures coarse particles and gelatinous precipitates such as iron, aluminum, and chromium hydroxides.
- Very fast flow rate with high loading capacity for heavily laden samples.
- Qualitative grade intended for clarification and routine separations rather than gravimetric analysis.
- Smooth, uniform surface supports consistent filtration performance across the disc.
Key Construction Characteristics
- Disc diameter of 110mm fits standard funnels and Buchner-style setups.
- Cellulose construction provides good wet strength for handling during filtration.
- Supplied nonsterile in packs of 100 discs.
This Grade 04 paper provides dependable, high-speed clarification for everyday laboratory workflows. Its coarse retention rating and strong loading capacity help maintain steady flow when filtering biological fluids, organic extracts, and other samples with high particulate content.
- Color
- White
- Diameter
- 110mm
- Flow Speed
- Extra Fast
- Grade
- 04
- Material
- Cellulose
- Pack Count
- 100
- Particle Retention
- 20um
- Pore Size (µm)
- 20
- Qualitative/ Quantitative
- Qualitative
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Coarse Precipitate Filtration Retains gelatinous and coarse precipitates such as iron hydroxide, aluminum hydroxide, and chromium hydroxide during routine separations.
- Routine Sample Clarification Provides rapid clean-up of biological fluids and organic extracts where fine particle collection is not required.
- Food Analysis Separates solid foodstuffs from associated liquids in general food testing procedures.
- Air Pollution Monitoring Suitable for monitoring air pollution when the collection of fine particles is not critical.
- Buchner Funnel Filtration The 110mm format and fast flow rate suit vacuum filtration of heavily loaded samples.
- Steel and Iron Analysis Used in silica determination during steel and iron analytical work.