Filtry jakościowe Grade 597 ˝

Składany filtr stosowany do wielu rutynowych zastosowań analitycznych w różnych gałęziach przemysłu, takich jak badania żywności (np. oznaczanie zawartości tłuszczu) lub usuwanie dwutlenku węgla i zmętnienia z napojów (np. w analizie piwa).
A prepleated filter used for a wide variety of analytical routine applications in different industries like food testing (e.g., determination of fat content) or removal of carbon dioxide and turbidity from beverages (e.g., beer analysis).

• 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 597 ½: 4-7 µm
A medium fast filter paper with medium to fine particle retention. Used for a wide variety of analytical routine applications in different industries like food testing (e.g., determination of fat content) or removal of carbon dioxide and turbidity from beverages (e.g., beer analysis). Also available in flat stock form as Grade 597.
Filtry jakościowe Grade 597 ½
Grade Grade 597 ½ 
Grade Type Folded (Prepleated) 
Particle Retention in Liquid Max. 7 µm
Typical Thickness 180 µm
Basis Weight 85 g/m2
Filtration Speed (Herzberg) Approx. 70 s
Material Cellulose 
Alpha Cellulose Content Min. 98%
Properties Medium fast 
Application Used for a wide variety of analytical routine applications in different industries like food testing (e.g.; determination of fat content) or removal of carbon dioxide and turbidity from beverages (e.g.; beer analysis). 
Product Product Name Diameter
10311841 Grade 597 ½ Qualitative Filter Paper Folded (Prepleated); 70 mm 70 mm
10311842 Grade 597 ½ Qualitative Filter Paper Folded (Prepleated); 90 mm 90 mm
10311843 Grade 597 ½ Qualitative Filter Paper Folded (Prepleated); 110 mm 110 mm
10311844 Grade 597 ½ Qualitative Filter Paper Folded (Prepleated); 125 mm 125 mm
10311845 Grade 597 ½ Qualitative Filter Paper Folded (Prepleated); 150 mm 150 mm
10311847 Grade 597 ½ Qualitative Filter Paper Folded (Prepleated); 185 mm 185 mm
10311851 Grade 597 ½ Qualitative Filter Paper Folded (Prepleated); 240 mm 240 mm
10311852 Grade 597 ½ Qualitative Filter Paper Folded (Prepleated); 270 mm 270 mm
10311853 Grade 597 ½ Qualitative Filter Paper Folded (Prepleated); 320 mm 320 mm
10311854 Grade 597 ½ Qualitative Filter Paper Folded (Prepleated); 385 mm 385 mm
10311856 Grade 597 ½ Qualitative Filter Paper Folded (Prepleated); 500 mm 500 mm