Distinguished by its well-documented behavior in regulated processes, the Fillter Circles, Qualitative, Grade 540, Ø 150 Mm, are a noteworthy addition to any laboratory setting. Manufactured by the renowned brand Whatman, these filter circles boast an ash content of less than 0.006%, ensuring exceptional purity. With a basis weight of 88 g/m² and a typical thickness of 160 µm, they offer a robust structure that can handle strong acid and alkali solutions. Their medium filtration speed, as indicated by a filtration time of 200 seconds and a filtration speed Herzberg of 200 s, makes them suitable for various applications. Moreover, their particle retention in liquid of 8 µm ensures efficient collection of particles during filtration, making them ideal for gravimetric analysis of metals in acid/alkali solutions and collecting hydroxides after precipitation by strong alkalis.

• Category: Quantitative Filter Papers
• Typical thickness: 160 µm
• Diameter [mm]: 150
• Brand: Whatman
• Filtration speed Herzberg: 200 s
• Type: Sorte 540
• UNSPSC 13.5: 41104929
• Filter type: filter circle
• Description: medium
• Ash content: < 0.006 %
• Particle retention in liquid: 8 µm
• Filtration time [s]: 200
• Basis weight: 88 g / m2