Grade 541 Quantitative Filter Paper Hardened Ashless, Circle & Sheet

GE’s Whatman Grade 541 acid hardened cellulose filter paper features high wet-strength, high chemical resistance, and a large nominal particle retention for fast analytical filtration.

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Description

  • 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

Along with fast Grade 541 filter paper, the hardened, ashless range from GE Healthcare’s Life Sciences business includes general-purpose Grade 540 and Grade 542for fine particle retention. All three paper grades are appropriate for use in gravimetric analysis with strong acids and alkali samples.

Gelatinous precipitate retention

Hardened ashless filter paper is recommended when fast filtration of a gelatinous precipitate for gravimetric analysis is performed on a strongly acidic or alkali solution. Applications of Grade 541 papers include:

  • 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
   Parameter Grade 541 Quantitative Filter Paper Hardened Ashless, Circle & Sheet
   Grade : Grade 541
   Type : Hardened Ashless
   Typical Particle Retention in Liquid1    : 22 µm
   Nominal Thickness : 155 µm
   Typical water flow rate2 : 359 ml/min
   Nominal Basis Weight : 78 g/m²
   Nominal Air Flow Rate : 3 s/100 mL/in²
   Nominal Ash Content3 : 0.005%
   Material : High-quality cotton linters
   Alpha Cellulose Content Min. : ≥98%
   Typical Trace Element Levels: Aluminium 3.4 µg/g Antimony less than 0.5 µg/g Arsenic less than 0.5 µg/g Barium less than 0.5 µg/g Boron less than 1 µg/g Calcium 14.7 µg/g Chromium 1.1 µg/g Copper 8.2 µg/g Iron 16.3 µg/g lead less than 0.5 µg/g Magnesium 3.3 µg/g Manganese less than 0.5 µg/g Mercury less than 0.5 µg/g Potassium 3.7 µg/g Silicon less than 6 µg/g Sodium 17 µg/g Zinc 87.8 µg/g
   Application : Typical applications include fiber in animal foodstuffs, gelatin in milk and cream, chloride in cement, and chloride and phosphorous in coal and coke.
   Format & Dimensions : Circle – Ø42.5 mm, Ø47 mm, Ø55 mm, Ø70 mm, Ø90 mm, Ø110 mm, Ø125 mm, Ø150 mm, Ø185 mm, Ø240 mm, Ø270 mm, Ø320 mm, Ø400 mm,

Sheet – 460 x 570 mm

   Pack Size : 100 pieces

1Particle retention rating at 98% efficiency

2For 9 cm diameter

3Ash is determined by ignition of the cellulose filter at 900°C in air.

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To make your order, please contact us at  info@polyscientific.com.my or call us at +6 06 3350 690

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