These standard qualitative filter papers from Johnson are recommended for use in general analytical methods which determine or identify particular constitutes of a mixture regardless of the amount present. They are often used in routine separation work that requires a high purity and consistent performance with an ash content of 0.04%

No. 3 filters are grade 302 and have medium flow properties.

• Thickness: 0.2mm
• Pore Size: 6-10µM