Gampi should not be beaten in a Hollander. Cook in soda ash before using. It has a lovely golden cream color. Sisal half-stuff is golden cream in sheet form ready for beating. It makes a pleasant, soft paper.
Sisal is no longer available in raw form.
It makes non-archival paper unless cooked in a caustic solution, which removes the impurities but leaves most of the color. Long, loose strands of fiber ready for cooking and beating. These larger samples contain enough fiber to test and still leave enough to keep as a permanent reference.