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    กระดาษกรอง Ashless filter paper (MN 640 w ≡ black ribbon, No. 41

    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

    Fast filtration, ashless, for fast filtration of coarse precipitates.

    Filter Papers – Filtrierpapiere
    Grade / Sorte                                            MN 640 w
    Weight / Gewicht [g/m2]                            85
    Thickness / Dicke [mm]                              0,2
    Filtration speed / Filtriergeschwindigkeit       9
    Surface / Oberfläche                                   smooth / glatt
    Ash content / Aschegehalt (%)                     < 0,01
    Average retention capacity /                         7 – 12
    mittleres Rückhaltevermögen

    Applications and properties /                        Ashless, fast filtration, for
    coarse precipitates e.g.
    iron- and aluminiumhydroxide,
    copper- and iron-sulphide,
    nickel diacetyldioxime /
    Anwendungen und Eigenschaften                 Aschefrei, schnell
    filtrierend, für grobe
    Niederschläge z.B. Eisenund
    Wismut-, Kupfer-
    Eisensufid, Nickel-

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