Whatman 1004-090 Quantitative Filter Paper Circles, 20-25 Micron, 3.7 s/100mL/sq inch Flow Rate, Grade 4, 90mm Diameter (Pack of 100)


Whatman 1004-090 Quantitative Filter Paper Circles, 20-25 Micron, 3.7 s/100mL/sq inch Flow Rate, Grade 4, 90mm Diameter (Pack of 100)
Whatman 1004-090 Quantitative Filter Paper Circles, 20-25 Micron, 3.7 s/100mL/sq inch Flow Rate, Grade 4, 90mm Diameter (Pack of 100)
Features
  • Grade 4
  • Used in qualitative analytical techniques to determine and identify materials
  • Extremely fast filtering; provides excellent retention of coarse particles (20-25µm) and gelatinous precipitates such as ferric hydroxide and aluminium hydroxide
  • 9.0cm
  • Used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical
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