Suitable for laboratory and industrial environments, these Fillter Circles, Qualitative, Grade 542, with a diameter of 70 mm, are manufactured by Whatman. They have a basis weight of 93 g/m² and a typical thickness of 150 µm. These filter circles exhibit slow filtration speed, with a filtration time of 2510 seconds They are designed to retain particles as small as 2.7 µm in liquids, making them suitable for various applications, including gravimetric metal determinations. With an ash content less than 0.006%, they offer excellent chemical resistance, ensuring high-quality results in demanding conditions.

• Category: Quantitative Filter Papers
• Brand: Whatman
• Ash content: < 0.006 %
• Type: Sorte 542
• Basis weight: 93 g / m2
• Filtration speed Herzberg: 2510 s
• Description: slow
• Particle retention in liquid: 2.7 µm
• Filter type: filter circle
• Diameter [mm]: 70
• UNSPSC 13.5: 41104929
• Filtration time [s]: 2510
• Typical thickness: 150 µm