Formulated to support synthetic operations, these Filter Circles, Qualitative, Grade 50, Ø 90 Mm, are designed for precise filtration tasks. Manufactured by Whatman, they boast a Type Sorte 50 classification and a Basis weight of 97 g/m². With a diameter of 90 mm, they offer a slow filtration rate of 2.7 µm, ensuring particle retention in liquids. Their typical thickness of 115 µm and filtration speed of 2685 s make them suitable for various applications within the lab. These circles can withstand wet handling and precipitate removal by scraping, making them an ideal choice for qualitative or quantitative filtrations requiring vacuum assistance on Büchner or 3-piece filter funnels.

• Category: Quantitative Filter Papers
• Particle retention in liquid: 2.7 µm
• Filtration time [s]: 144
• Typical thickness: 115 µm
• Diameter [mm]: 90
• Brand: Whatman
• Type: Sorte 50
• Ash content: 0.015 %
• Filter type: filter circle
• UNSPSC 13.5: 41104929
• Basis weight: 97 g / m2
• Filtration speed Herzberg: 2685 s
• Description: slow