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Description
Recommended when fast filtration of a gelatinous precipitate for gravimetric analysis is performed on a strongly acidic or alkali solution. Whatman™ Quantitative Filter Paper: Grade 541 Circles are acid hardened cellulose filters, which reduces ash to an extremely low level.
Whatman hardened ashless quantitative filter papers are acid-hardened to give high wet strength and chemical resistance with extremely low ash content. They are suitable for a wide range of critical filtration procedures.
- Large nominal particle retention for fast analytical filtration.
- High wet-strength
- High chemical resistance to strong acid and alkali suspensions
- Retention of gelatinous precipitate
- 22 μm nominal particle retention rating
- Fast flow rate (Herzberg filtration speed 34 s)
- Maximum of 0.006% ash concentration
- Quantitative determination of milk sediment
- Use as an animal foodstuff filter for determining fiber content
- Determination of gelatin content in milk and cream
- Quantification of chloride in cement, as well as chloride and phosphorous in coal and coke
Specifications
Specifications
| Airflow Rate | 3 s/100 mL/in2 |
| Description | Grade 541 Ashless Fast Filter Paper, 185 mm circles (100 pcs) |
| Filter Type | Hardened Ashless |
| Format | Disc |
| Material | Cotton Linters |
| Particle Retention | 22 μm |
| Filtration Speed | ASTM, 12 seconds; Herzberg, 34 seconds |
| Flow Rate | 359mL/min |
| For Use With (Application) | Typical applications include fiber in animal foodstuffs, gelatine in milk and cream, chloride in cement, and chloride and phosphorous in coal and coke. |
| Grade | Grade 541 |
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