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Whatman™ Qualitative Filter Paper: Grade 597½ Pleated Circles

Pleated to save time and achieve optimal fit in conical filter funnels. Whatman™ Qualitative Filter Paper: Grade 597½ Pleated Circles provide extra surface area to increase total loading capacity.

Manufacturer: whatman™  WHT10311845*

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Catalog No. 09-924-185

  • / Pack of 100 Each

Description & Specifications


Format Pleated Circle
Pore Size (Metric) 4 to 7μm
Thickness (Metric) 180μm
Particle Retention Medium to fine
Quantity 100Pack
Grade 597½
Diameter (Metric) 150mm
Material Cellulose
Flow Rate Medium Fast

Folded filter is used for many routine analytical applications in various industries. Pleated paper enhances and eases filtering process. 

  • Saves time in repetitive or multiple analyses
  • Decreases overall filtration time; normal slow down due to particulate loading is eliminated
  • Increases total loading capacity
  • Maintains flow rate; contact with funnel is reduced, shape of filter is self-supporting
  • Pleating does not significantly affect technical data; same figures may be used with flat circles
  • Grade 597½ is a medium fast paper with medium to fine particle retention
  • Applications include:
    • Food testing; determination of fat content
    • Removal of carbon dioxide and turbidity from beverages