Macherey-Nagel Filter Papers, folded, grade MN 619 eh 1/4, 320 mm, 100 pcs.

equivalent to Whatman/Schleicher Schüll article No. 10312653, 206320. Basis weight: 85 g/m2. Thickness: 0.17 mm. Filtration speed: 140 s/10 ml. Smooth. Slow filtration for fine and very fine precipitates.