Appreciated for its predictable solubility and handling characteristics, the Filter Circles, Qualitative, Grade 50, Ø 70 Mm, are particularly suited for qualitative or quantitative filtrations. These filter circles, manufactured by Whatman, exhibit a slow filtration rate, ensuring thorough separation of particles down to 2.7 micrometers. With a basis weight of 97 grams per square meter and a typical thickness of 115 micrometers, these filter circles offer robust performance on Büchner or 3-piece filter funnels. Their high-quality construction, featuring a hardened and highly glazed surface, ensures they remain free from loose surface fibers, making them ideal for applications that require vacuum assistance.

• Category: Quantitative Filter Papers
• Typical thickness: 115 µm
• Brand: Whatman
• Basis weight: 97 g / m2
• Particle retention in liquid: 2.7 µm
• Diameter [mm]: 70
• Description: slow
• Filter type: filter circle
• Ash content: 0.015 %
• UNSPSC 13.5: 41104929
• Filtration speed Herzberg: 2685 s
• Type: Sorte 50
• Filtration time [s]: 144