420178 – Filter Paper Grade 4, 42.5mm Diameter (Pack of 100)

$18.00 ex GST

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SKU: 420178 Category:

Product Description

Filter Paper Grade 4

Available Sizes:

  • Circles: 27 mm to 400 mm (available prepleated)
  • Sheets: 38 x 114 mm to 580 x 580 mm


  • Particle retention1: 25µm
  • Nominal thickness: 210 µm
  • Nominal basis weight: 92 g/m2
  • Nominal ash content2: 0.06%


Grade 4 is a fast filter material that is well suited for retention of coarse particles and gelatinous precipitates, such as ferric hydroxide and aluminum hydroxide. Specific applications include:

  • Air pollution monitoring where the collection of fine particles is not critical
  • Routine clean-up of biological fluids or organic extracts