Whatman™ Quantitative Filter Paper: Grade 541 Circles
Whatman™ Quantitative Filter Paper: Grade 541 Circles
Actual product may vary
Fisher Catalogue

Whatman™ 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.
Have Questions?
Change viewbuttonViewtableView
Catalog NumberDiameter (Metric)
FKS11392995125 mm
FKS1139051442.5 mm
FKS1064296270 mm
FKS10505371150 mm
Catalog number FKS11392995
View Price:Sign in to see your account pricing. Need an account? Register with us today.
Diameter (Metric):
125 mm
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 Rate3 s/100 mL/in2
DescriptionGrade 541 Ashless Fast Filter Paper, 125 mm circles (100 pcs)
Filter TypeHardened Ashless
FormatDisc
MaterialCotton Linters
Particle Retention22 μm
Filtration SpeedASTM, 12 seconds; Herzberg, 34 seconds
Flow Rate359mL/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.
GradeGrade 541
PorosityCoarse
Quantity100/Pk.
Thickness (Metric)155 μm
TypeQuantitative Filter Paper
Diameter (English)4.92 in.
Diameter (Metric)125 mm
Unit SizePK