Whatman™ FKS10642962 Quantitative Filter Paper: Grade 541 Circles

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

Applications

• 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:

• Airflow Rate: 3 s/100 mL/in²
• Description: Grade 541 Ashless Fast Filter Paper, 70 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: 359 mL/min
• For Use With (Application): Typical applications include fiber in animal foodstuffs, gelatine in milk and cream, chloride in cement, and chloride and phosphorus in coal and coke.
• Grade: Grade 541
• Porosity: Coarse
• Quantity: 100/Pk.
• Thickness (Metric): 155 μm
• Type: Quantitative Filter Paper
• Diameter (English): 2.75 in.
• Diameter (Metric): 70 mm
• Unit Size: Pack

Note: Picture is for illustration only. The actual product might be different