Approved for use in technically demanding laboratory workflows, the Filter Circles, Qualitative, Grade 4, Dia.: 150 Mm, from Whatman, offer exceptional performance in filtering coarse particles and gelatinous precipitates. These filters exhibit a filtration speed of 37 seconds, making them ideal for applications requiring high flow rates, such as air pollution monitoring or the clean-up of biological fluids or organic extracts during analysis. With a particle retention range of 20 to 25 microns, these filters ensure efficient removal of unwanted substances while maintaining a weight of 96 grams per square meter and a thickness of 0.2 millimeters.

• Category: Qualitative Filter Papers
• Diameter [mm]: 150
• Filtration time [s]: 37
• Thickness: 0.20 mm
• Filtration speed: 37 s
• Brand: Whatman
• Filter type: filter circle
• Particle retention: 20 to 25 µm
• Weight: 96 g / m2
• Type: Sorte 4
• UNSPSC 13.5: 41104929
• Ash: 0.06 %