A staple reagent in organic synthesis and formulation chemistry, Whatman's Grade 542 Filter Circles, with a diameter of 150 mm, offer exceptional particle retention in liquids down to 2.7 µm. These filter circles, featuring a slow filtration speed of 2510 seconds, boast a basis weight of 93 g/m² and a typical thickness of 150 µm. With an ash content of less than 0.006%, they provide reliable results in various applications, including gravimetric metal determinations.

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