Developed for demanding processing applications, the Quantitative Filter Papers, specifically the Filter Circles, Qualitative, Grade 50, Ø 320 Mm, are engineered to retain very fine crystalline precipitates. Manufactured by Whatman, these filter circles offer exceptional performance with a slow filtration rate, ensuring precise results in qualitative or quantitative filtrations. Their high-quality construction features a hardened and highly glazed surface that resists loose surface fibers, making them suitable for vacuum-assisted filtrations on Büchner or 3-piece filter funnels. With a basis weight of 97 g/m² and a typical thickness of 115 µm, these filters can withstand wet handling and precipitate removal by scraping, providing durability and reliability in various laboratory settings.

• Category: Quantitative Filter Papers
• Type: Sorte 50
• Ash content: 0.015 %
• Typical thickness: 115 µm
• Filtration speed Herzberg: 2685 s
• Brand: Whatman
• Description: slow
• Basis weight: 97 g / m2
• Filter type: filter circle
• Diameter [mm]: 320
• Filtration time [s]: 144
• UNSPSC 13.5: 41104929
• Particle retention in liquid: 2.7 µm