Recognized in industrial and academic chemical settings alike, the Filter Circles, Quantitative, Grade 42, Ashless, Dia.: 90 Mm are a renowned choice for critical gravimetric analysis due to their exceptional particle retention capabilities. These filter circles, manufactured by Whatman, boast an impressive 2.5 micrometer particle retention, making them ideal for handling analytical precipitates such as barium sulfate, metastannic acid, and finely precipitated calcium carbonate. With a thickness of 0.20 millimeters and a weight of 100 grams per square meter, these filter circles offer a robust filtration solution that ensures accurate results in various chemical applications.

• Category: Quantitative Filter Papers
• Diameter [mm]: 90
• Thickness: 0.20 mm
• Ash: 0.007 %
• Filter type: filter circle
• Filtration time [s]: 1870
• Type: Sorte 42
• UNSPSC 13.5: 41104929
• Weight: 100 g / m2
• Filtration speed: 1870 s
• Brand: Whatman
• Particle retention: 2.5 µm