Recognized in industrial and academic chemical settings alike, the Filter Circles, Qualitative, Grade 3, Ø 55 Mm, from Whatman, offer a medium flow rate with an approximate filtration speed of 325 seconds. These filter circles boast a thickness of 390 micrometers, providing increased wet strength and making them highly suitable for use in Büchner funnels. With a basis weight of 187 grams per square meter and a particle retention in liquid of 6 micrometers, these filter circles effectively retain particles while maintaining a reasonable filtration time of 26 seconds. This combination of properties makes them an ideal choice for various filtration applications within the laboratory setting.

• Category: Qualitative Filter Papers
• Brand: Whatman
• Description: medium flow
• Filter type: filter circle
• Type: Sorte 3
• Diameter [mm]: 55
• Filtration speed herzberg: approx. 325 s
• Basis weight: 187 g / m2
• Particle retention in liquid: 6 µm
• Air flow: 26 (s / 100 ml / in2)
• UNSPSC 13.5: 41104929
• Typical thickness: 390 µm
• Filtration time [s]: 26