Please excuse me if I have posted this before. I don't remember and it's really too good not to share.
I found this recipe for an archival dipping solution (as opposed to the mist that you spray on) while looking for pH pens.
formatting link
I've made a batch and plan to try it tomorrow on some birch bark I want to use in a western layout I'm planning.
- crosses fingers tightly
Hugs, Rach