Ashless filter papers

For quantitative analysis and filtration with low blank values 
Ashless filter papers are particularly suited for quantitative routine  analysis and are manufactured from refined pulp and linters. They are acid-washed and have an extremely low ash content of 0.01%. The amount of a-cellulose is about 95%.

Ashless filter paper grades
Very slow filtration for extremely fine precipitates.

Filter Papers – Filtrierpapiere
Grade / Sorte                                            MN 640 de
Weight / Gewicht [g/m2]                            100
Thickness / Dicke [mm]                              0,2
Filtration speed / Filtriergeschwindigkeit       195
[s]
Surface / Oberfläche                                   smooth / glatt
Ash content / Aschegehalt (%)                     < 0,01
Average retention capacity /                         1 – 2
mittleres Rückhaltevermögen
[μm]
Applications and properties /                        Ashless, very slow
filtration, for extremely fine
precipitates /
Anwendungen und Eigenschaften                  Aschefrei, sehr langsam
filtrierend, für feinste
Niederschläge