Filtry jakościowe Grade 520 a ˝

Cienki papier o znakomitej wytrzymałości w stanie mokrym i bardzo wysokim przepływie. Często używany w zastosowaniach technicznych, takich jak filtracja lepkich cieczy i emulsji (np. słodzone soki, alkohole i syropy, roztwory żywic, oleje lub ekstrakty roślinne).
A thin paper with great wet strength and a very high flow rate. Frequently used in technical applications such as the filtration of viscous liquids and emulsions (e.g., sweetened juices, spirits and syrups, resin solutions, oils, or plant extracts).

• 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.

Also available in flat stock form as Grade 520 a.
Filtry jakościowe Grade 520 a ½
Filtry jakościowe Grade 520 a ½
Grade Grade 520 a ½ 
Grade Type Folded (Prepleated) 
Particle Retention in Liquid Max. 18 µm
Typical Thickness 300 µm
Basis Weight 90 g/m2
Filtration Speed (Herzberg) Approx. 17.5 s
Material Cellulose 
Alpha Cellulose Content Min. 98%
Properties Very fast; creped; high wet strength 
Application Frequently used in technical applications such as the filtration of viscous liquids and emulsions. 
Product Product Name Diameter
10331451 Grade 520 a ½ Qualitative Filter Paper Folded (Prepleated); 240 mm 240 mm
10331456 Grade 520 a ½ Qualitative Filter Paper Folded (Prepleated); 500 mm 500 mm
10331494 Grade 520 a ˝ Qualitative Filter Paper Folded (Prepleated), 450 mm 450 mm
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