Grade 909 Qualitative Filter Paper

Photo of Ahlstrom 909 Medium Speed Wet-Strengthened Filter Paper

Ahlstrom 909, 3.0 mm - Medium Speed. This medium flow rate qualitative wet-strengthened grade filter paper with very good retention is a tighter version of Ahlstrom 962. This grade has a rough surface and is often found in the food industry for routine tests. Ahlstrom