Structured to assist in consistent experimental procedures, the Fillter Circles, Qualitative, Grade 541, Ø 90 Mm, from Whatman, offer fast filtration of coarse particles and gelatinous precipitates in acid/alkali solutions during gravimetric analysis. These filter circles, with a basis weight of 82 g/m², feature a typical thickness of 155 µm and a particle retention in liquid ranging from 20 to 25 µm. With a filtration speed of 34 s these filters ensure efficient separation in various applications such as fibre in animal foodstuffs, gelatine in milk and cream, chloride in cement, and chloride and phosphorus in coal and coke.

• Category: Quantitative Filter Papers
• Description: fast
• Filtration speed Herzberg: 34 s
• Filter type: filter circle
• Diameter [mm]: 90
• Ash content: < 0.006 %
• Filtration time [s]: 3
• Particle retention in liquid: 20 to 25 µm
• Basis weight: 82 g / m2
• UNSPSC 13.5: 41104929
• Typical thickness: 155 µm
• Type: Sorte 541
• Brand: Whatman