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Ahlstrom Filtration 0540-0425
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Ahlstrom Filtration Grade 54 Ashless Quantitative Filter Paper, 4.25 cm dia

Quantitative Filter Paper, 4.25 cm dia, Cotton, Grade 54, Ashless Grade Type, Circle Format, 0.241 mm Thickness, 10 µm Particle Retention in Liquid, 87.8 g/m2 Nominal Basis Weight, 34 sec/100 ml (Herzberg) Filtration Speed

  • Manufacturer Part No: 0540-0425
  • SECO Part No: AHL-0540-0425
  • Sold As:
  • Availability: loading

Ahlstrom manufactures a series of extremely high purity, acid washed filter papers designed for use in analytical and gravimetric analysis. The quantitative grades are manufactured from top quality cotton linters using ultra-pure, reverse-osmosis water and are further treated with dilute acid to remove any remaining organic and inorganic impurities. All quantitative grades are manufactured in a strictly controlled environment that ensures high uniformity and high purity from filter to filter. This is a fast filtering grade for rapid filtration of coarse particles and gelatinous precipitates such as iron, zirconium and aluminum hydroxides and cobalt sulfide. Ahlstrom 54 is also used in air pollution testing to determine gaseous compounds. It is recommended for fast analysis procedures for unstable precipitates such as silicon, which requires speedy filtration.

Diameter : 4.25 cm
Grade : 54
Material (ml/min) : Cotton
Ash Content : 0.007%
Grade Type : Ashless
Type : Quantitative
Filtration Speed : 34 sec/100 ml (Herzberg)
Format : Circle
Nominal Basis Weight : 87.8 g/m2
Particle Retention in Liquid : 10 µm
Properties : Fast Flow
Thickness : 0.241 mm
Typical Water Flow Rate : 200 ml/min
Wet Burst Pressure : 50.8 mm
Loading Capacity : Medium
Rapidity Filtration Speed : 200 ml/min
Klemm (Capillary Rise) : 38 mm/min
Frazier Air Permeability : 4.5 cfm/sq ft
  • Quantitative analysis
  • Acid-wash treated
  • High wet-strength
  • Consistent performance
  • Bulk packaging

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