FILTER PAPER CIRCLES WHATMAN GRADE NO.4 7CM DIA BOX 100 Nn Unground Neck Pyrex Ohaus Harvard Trip Series 1550-SD

Ohaus Harvard Trip Series 1550-SD Top loading

pen-style counter with five digit LCD readout  of accumulative count-up and reset

OIML - International Organisation for Legal Metrology

All plates are 20 x 20cm and can be cut with scissors

With hexagonal base and square grip polypropylene stopper

FILTER PAPER CIRCLES WHATMAN GRADE NO.4 7CM DIA BOX 100 Nn Unground Neck Pyrex Ohaus Harvard Trip Series 1550-SDQualitative 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.