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  5. Cytiva Whatman™ Quantitative Filter Paper: Grade 541 Circles

Cytiva Whatman™ Quantitative Filter Paper: Grade 541 Circles

Catalog No. 09851G
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Diameter (Metric):
42.5 mm
47 mm
55 mm
70 mm
90 mm
110 mm
125 mm
150 mm
185 mm
240 mm
270 mm
320 mm
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Catalog No. Diameter (Metric)
09851G 42.5 mm
09928165 270 mm
09851H 47 mm
09851J 55 mm
09851A 70 mm
09851B 90 mm
09851C 110 mm
09851D 125 mm
09851E 150 mm
09851K 185 mm
09851L 240 mm
09851N 320 mm
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Catalog No. 09851G Supplier Cytiva Supplier No. 1541042
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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
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, 42.5 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
Porosity Coarse
Quantity 100/Pk.
Thickness (Metric) 155 μm
Type Quantitative Filter Paper
Diameter (English) 1.67 in.
Diameter (Metric) 42.5 mm
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