Qualitative filter paper circles, Whatman Grade 3

Filter paper made from pure cellulose for general, analytical, and technical filtration of crystalline precipitations and particulates, with slow flow rate. Grade 3 qualitative filter papers are double the thickness of Grade 1 with a slower filtration, but the thickness gives a notable increase in dry and wet strength as well as loading capacity. Used for qualitative analyses and to collect and identify materials in your sample.

Specifications:

• Surface: Smooth
• Particle retention in liquid: 6 µm (98 %)
• Filtration speed: 28 mL/min
• Thickness: 0,39 mm
• Basis weight: 185 g/m²
• Ash content: 0,06 %