• 5.5cm Diameter, Pore Size: 20-25µm
• Grade 4 Qualitative Filter Paper
• 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 aluminum hydroxide
• Used when high flow rates in air pollution monitoring are required and the collection of fine
particles is not critical • Available in different sizes
