The line CL501 of filter papers is the most used for routine applications retention and average filtration rate quickly. Formed with the same materials as the ash-free papers is available in a wide variety of diameters.
For general laboratory filtration and for fine precipitates to media such as contents of paraffin in emulsions. It is recommended as an alternative application S&S 595 papers and Macherey-Nagel 615.