No 41 (MN-640 w)

Whatman No 41 / andMacherey-Nagel 640 w

Quantitative Filter Papers

Ashless filter papers for quantitative analysis.and

Smooth, fast filtration.

Thickness 0.20 mm

Filtration speed 9 s

Basic weight 85g/m2

Extremely Low Ash Content (<0.01%)

This is the fastest ashless filter paper in the range.and

It is particularly suitable for analytical tests involving large particles (such as metal hydroxides and sulphides) or gelatinous precipitates. Also recommended for metal (Pb) tests in water testing anaysis.

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 α-cellulose is about 95 %and

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