FILTER PAPER CIRCLES WHATMAN GRADE NO.4 12.5CM DIA BOX 100 Plastic Bottles up to 2 Litres Complies with BS604 and ISO4788

Complies with BS604 and ISO4788

marking spot and approximate graduations

mm   3MM     Filtration grade of chromatography paper 3MM Chr   Medium   11 Medium* 0

Overall height approximately 140mm

Care must be taken to prevent rupture of paper

FILTER PAPER CIRCLES WHATMAN GRADE NO.4 12.5CM DIA BOX 100 Plastic Bottles up to 2 Litres Complies with BS604 and ISO4788Qualitative Grade Grade No. Flowrate Retention microns Wet strength Thickness, mm Ash % 4 Excellent retention of coarse and gelatinous precipitates Fast 20 25 Low* 0. 21 0. 06 *Suitable for gravity or low suction filtration. Care must be taken to prevent rupture of the paper.