Built to deliver predictable results in quantitative filtration routines, these Fillter Circles from Whatman are designed with a Type 542 grade and a basis weight of 93 g/m². With an average filtration time of 2510 seconds, they provide slow filtration suitable for gravimetric metal determinations. Their typical thickness of 150 µm ensures high retention of fine particles down to 2.7 µm in liquids, making them ideal for applications requiring excellent chemical resistance.

• Category: Quantitative Filter Papers
• Diameter [mm]: 55
• Typical thickness: 150 µm
• Filtration speed Herzberg: 2510 s
• Type: Sorte 542
• Brand: Whatman
• Filter type: filter circle
• Filtration time [s]: 2510
• UNSPSC 13.5: 41104929
• Basis weight: 93 g / m2
• Particle retention in liquid: 2.7 µm
• Description: slow
• Ash content: < 0.006 %