Optimized for controlled laboratory processes, the Filter Circles, Qualitative, Grade 540, Ø 55 Mm are designed for efficient filtration in quantitative applications. Manufactured by Whatman, these filter circles feature a Type Sorte 540 classification, offering a medium retention and flow rate. With an extremely low ash content of less than 0.006%, they ensure high purity and strength, making them suitable for gravimetric analysis of metals in acid/alkali solutions and collecting hydroxides after precipitation by strong alkalis. These filter circles boast a basis weight of 88 g/m², a typical thickness of 160 µm, and a filtration time of 200 seconds, providing reliable performance in various laboratory settings.

• Category: Quantitative Filter Papers
• Basis weight: 88 g / m2
• UNSPSC 13.5: 41104929
• Filtration speed Herzberg: 200 s
• Brand: Whatman
• Filter type: filter circle
• Description: medium
• Particle retention in liquid: 8 µm
• Typical thickness: 160 µm
• Diameter [mm]: 55
• Type: Sorte 540
• Ash content: < 0.006 %
• Filtration time [s]: 200