Whatman 10310244 Grade 287 1/2 Qualitative Filter Paper Folded (Prepleated), 125 mm, 50 per pack (DISCONTINUED)

Time-saving Whatman qualitative grades are offered in this convenient form, which gives major advantages over flat circles.

Kieselguhr paper with a medium to slow flow rate. Additional adsorption effect (e.g., for the separation of very fine semi-colloidal turbidity, for clarifying milk serum, starch solutions, soil suspensions or sugar-containing solutions prior to polarimetry or refractometry). Also available in flat stock form as Grade 287.

Features:

• Savings in time required to quadrant-fold circles to fit conical Filter funnels in repetitive or multiple analysis.
• Decreased overall filtration time because of the extra surface area exposed; the normal slow down of filtration speed due to the loading of Particulate is postponed.
• Increased total loading capacity as more Filter area is available.
• Maintained flow rate due to the reduction in Filter paper contact with funnel side and the self-supporting shape of the Filter itself.
• The prepleating does not significantly affect any of the technical data, and the same figures may be used for the flat circles.