Circular filters Type: MN 640 m

For qualitative analysis. Made from refined pulp washed in acid and linters with a α cellulose content of over 95%. Ash content < 0.01%. Temperature stable up to approx. +130 °C. Surface weight: 85 g/m².

Medium filtration speed. Filtration time according to DIN 53137: 27 s. Equivalent white strip. For deposits such as sulphide, lead chromate, calcium oxalate. Typical uses: Gravimetrical analyses, quantitative determination of retention and purification processes. Retention range: > 4 μm.