FILTER PAPER CIRCLES WHATMAN GRADE NO.4 9CM DIA BOX 100 Weight Sets UKAS Certificate Bottle diameter x height 227

Bottle diameter x height 227 x 414mm

External calibration using accessory weight

These baths require a clean air supply at a pressure of 21KN/m2  (3psi) and maximum flow of 57 litres/minute

Alternatively when using liquid or discard cycles waste water can be fed to an external vent rather than the drain bottle

microtitre plates and conical tubes with screw cap (blood collection tube and cyto accessories are also available - details on request)

FILTER PAPER CIRCLES WHATMAN GRADE NO.4 9CM DIA BOX 100 Weight Sets UKAS Certificate Bottle diameter x height 227Qualitative 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.