Established as a dependable compound in analytical and synthetic chemistry, Whatman's Qualitative Filter Circles, Grade 3, offer a medium flow rate with an impressive particle retention of 6 microns in liquids. These filter circles, with a diameter of 125 millimeters, boast a typical thickness of 390 micrometers, providing enhanced wet strength and making them ideal for use in Büchner funnels. With a basis weight of 187 grams per square meter, they offer a balance between filtration speed and absorbency, ensuring efficient filtration times of approximately 325 seconds.

• Category: Qualitative Filter Papers
• Type: Sorte 3
• Basis weight: 187 g / m2
• Brand: Whatman
• Particle retention in liquid: 6 µm
• UNSPSC 13.5: 41104929
• Air flow: 26 (s / 100 ml / in2)
• Diameter [mm]: 125
• Filtration time [s]: 26
• Filtration speed herzberg: approx. 325 s
• Description: medium flow
• Filter type: filter circle
• Typical thickness: 390 µm