Deer Geez & Ware,
Sorry ware I was thinking in freebase terms, I was thinking the acetone might break up the gels holding on to the pfed fb in solution.
I'm thinking he just rinsed away the remnants of the HCl wash.
I don't think orange is a part of the polymer that locks up the pfed. the hydrogels that lock up the pfed, the orange/brown is just an indicator.
swihk has seen the solutions, the hydrogel is visual way before the pH-of-pfed-migration is reached.
ware I've been wanting to know the name of the orange so I can try work out how you solved it with JD, tell me in PM if it's a secret.
heh ware I'm sure geez knows you already cracked the "rootbeer".