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Thumbnail Filmstrip of Cellulose Filter Paper Discs, Grade 541, Hardened Ashless, 20-25um, 55mm, Quantitative, 100/Pk Images
Featuring an acid-hardened cellulose medium with extremely low ash content, this Grade 541 quantitative filter paper delivers fast filtration of coarse particles and gelatinous precipitates during gravimetric analysis. The 55mm circles provide a coarse nominal particle retention of 20 to 25 microns and high wet-strength, making them well suited to demanding analytical filtration in strongly acidic or alkaline solutions. Each pack contains 100 discs.
Key Cellulose Filter Paper Characteristics
- Hardened ashless construction: acid-treated to reduce ash to an extremely low level for accurate weight measurements after combustion.
- Coarse retention, fast flow: nominal particle retention of 20 to 25 microns for rapid filtration of coarse and gelatinous precipitates.
- High wet-strength: the hardened texture withstands handling and supports recovery of retained precipitates.
- High chemical resistance: compatible with strong acid and alkali suspensions used in gravimetric analysis.
- Hydrophilic cellulose: wets readily for consistent aqueous filtration.
Key Construction Characteristics
- Material: acid-hardened cellulose.
- Format: 55mm diameter circles.
- Grade: 541, hardened ashless, quantitative.
- Sterility: nonsterile.
- Pack: 100 discs per pack.
This filter paper maintains reliable performance across critical analytical filtration procedures, providing dependable retention while protecting sample integrity. Its combination of speed, wet-strength, and low ash content makes it a consistent choice for gravimetric workflows involving aggressive chemical solutions.
- Color
- White
- Diameter
- 55mm
- Flow Speed
- Fast
- Grade
- 541
- Hardened (Yes/ No)
- Yes
- Material
- Cellulose (acid-hardened)
- Mesh Format
- Circle
- Pack Count
- 100
- Particle Retention
- 20-25 um
- Pore Size (µm)
- 20.0-25.0
- Qualitative/ Quantitative
- Quantitative
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Whatman Equivalent
- Grade 541
- Gravimetric Analysis Recommended for fast filtration of gelatinous precipitates in strongly acidic or alkaline solutions during gravimetric determinations.
- Coarse Particle Filtration The 20 to 25 micron retention rapidly captures coarse particles and gelatinous precipitates such as metal hydroxides.
- Food and Feed Testing Used as an animal foodstuff filter for determining fiber content and for measuring gelatin in milk and cream.
- Cement Analysis Supports quantification of chloride in cement during quality control testing.
- Coal and Coke Analysis Applied to the determination of chloride and phosphorous in coal and coke.
- Aggressive Chemical Filtration High wet-strength and chemical resistance allow filtration from strong acid and alkali suspensions.