Qualitative Filter Paper, 150 mm dia, Cellulose, Grade 287 1/2

Diameter	:	150 mm
Grade	:	Grade 287 1/2
Material	:	Cellulose
Grade Type	:	Folded (Prepleated)
Type	:	Qualitative
Filtration Speed	:	330 sec (Herzberg)
Nominal Basis Weight	:	154 g/m2
Particle Retention in Liquid	:	7 to 12 µm
Properties	:	Kieselguhr
Thickness	:	360 µm

Kieselguhr prepleated paper with a medium to slow flow rate and additional adsorption effectSavings in time required to quadrant-fold circles to fit conical filter funnels in repetitive or multiple analysesDecreased overall filtration time because of the extra surface area exposed; the normal slow down of filtration speed due to the loading of particulate is postponedIncreased total loading capacity as more filter area is availableMaintains flow rate due to the reduction in filter paper contact with funnel side and the self-supporting shape of the filter itselfThe prepleating does not significantly affect any of the technical data and the same figures may be used for the flat circlesTime-saving Whatman™ qualitative grades are offered in this convenient form, which gives major advantages over flat circlesApplication: For clarifying milk serum, starch solutions, soil suspensions or sugar-containing solutions prior to polarimetry or refractometer