Ahlstrom Qualitative Filter Papers are now available through SWORKSDESIGN!

There is growing interest in these high filtration filters in the online coffee community with reports of lowered astringency. I am carrying a limited supply to allow wider access for those who want to try them - especially for those outside the US.

100 filters per box

Solid aluminum holder is available here

Below are snippets from Ahlstrom publications:

Wet Strengthened Grade 909 (3.0 µm, Medium Speed)

This medium flow rate grade with very good retention is a tighter version of Grade 962. This grade has a rough surface and is often found in the food industry for routine tests.