Whatman™ Filter Paper 55 mm, 40 Grade, Medium Porosity, Circle Format, 210 µm Thickness, Medium Flow Rate, 8 µm Pore

Features

• For medium crystalline precipitates: calcium oxalate, well-digested barium, normal loading; limited wet strength
• High-purity filters for quantitative analysis
• Contain 0.007% maximum ash content
• Medium nominal particle retention rating of 8 µm
• Medium filtration speed (Herzberg 340 sec.)
• Suited for soil analysis, when separating solid matter from aqueous extracts
• Quantitative determination of milk sediment
• Use as a clean-up filter for solutions prior to atomic absorption (AA) spectrometry
• Analysis of constituent components in cements, clays, iron and steel products
• Collection of trace elements and radionuclides from the atmosphere