Grade 1573 ½ Qualitative Filter Paper Folded (Prepleated)

A medium fast filter paper with high wet strength. This paper has the same chemical resistance characteristics as Grade 1573

• 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 1573 ½: 12-25µm

Specifications:

• Grade: Grade 1573 ½
• Grade Type: Folded (Prepleated)
• Particle Retention in Liquid Max.: 25 µm
• Typical Thickness: 170 µm
• Basis Weight: 88g/m²
• Filtration Speed (Herzberg): Approx. 25s
• Properties: Fast, smooth

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