Lead time: 12 working weeks
Time-saving Whatman qualitative grades are offered in this convenient form, which gives major advantages over flat circles. Widely used for general purpose filtration. Has excellent particle retention and a good filtration speed and loading capacity. Also available in flat stock form as Grade 2. 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.