Thomas CFP3-185 Cellulose Qualitative Filter Paper, 6 Micron, Slow Flow, Grade, CFP3, 18.5cm Diameter (Pack of 100) Qualitative cellulose filter papers perform separation by entrapping particulate Widely used in methods requiring the determination and identification of particulate in both liquids and gas Does not clog as easily as the other qualitative cellulose types Used as a sample conveyance substrate Demonstrates very high levels of absorbency