Filtry jakościowe Grade 591

Filtr standardowy do szybkiej filtracji średnich i gruboziarnistych osadów.
A standard grade filter for fast filtration of medium to coarse precipitates.

These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.

Grade 591: 7-12 µm
A thick filter paper with very high loading capacity for fast filtration of medium to coarse precipitates. Offers high absorbency and increased wet strength. Also available prepleated as Grade 591 1.
Grade Grade 591 
Grade Type Standard 
Diameter 580 mm
Dimensions 580 x 580 mm (23 x 23 in) 
Particle Retention in Liquid Max. 12 µm
Typical Thickness 350 µm
Basis Weight 161 g/m2
Filtration Speed (Herzberg) Approx. 45 s
Air Flow Rate 5.9 s/100 ml/in2
Material Cellulose 
Alpha Cellulose Content Min. 98
Properties Medium fast; thick 
Application For fast filtration of medium to coarse precipitates. 
Product Product Name Format
10311387 Grade 591 Qualitative Filter Paper Standard Grade; sheet; 580 × 580 mm 250 pieces