Grade 598 ½ Qualitative Filter Paper Folded (Prepleated)

A thick prepleated filter paper with high loading capacity. Combines medium retention with medium-fast to quick filtration speed.

• Savings in time required to quadrant-fold circles to fit conical filter funnels in repetitive or multiple analyses.
• 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.

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

Grade 598 ½: 8-10 µm

Specifications:

• Grade: Grade 598 ½
• Grade Type: Folded (Prepleated)
• Particle Retention in Liquid Max.: 10 µm
• Typical Thickness: 320 µm
• Basis Weight: 140g/m²
• Filtration Speed (Herzberg): Approx. 50s
• Properties: Medium fast, thick

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