Thomas CFP41-047 Cellulose Quantitative Filter Paper, 4.7cm Diameter, 19-26 Micron, Fast Flow, Grade CFP41 (Pack of 100) Quantitative cellulose filter papers are primarily used in gravimetric analysis procedures and perform separations This media family is also widely used in methods to prepare samples Ideal for initial separation of gelatinous precipitates Very fast flow rates and loose retention characteristics These ashless filter papers are manufactured from refined pulp and linters