Does either the Leucine or BCAAs from NP mix ok in water?
I have had experience with other bulk labels where they just stay on top of the water even when you shake it and let it sit for hours.
NP's have a really low mesh size, and can get into solution pretty easily.If you're still having trouble, mix it with a little bit of vitamin C, Crystal Light, or something acidic. High MW amines are soluble in slightly acidic solution.
The NP BCAAs mix up quite well. Some will sit on top for a few minutes, but not for long. Mix up just like the newer runs of Xtend, which mix much better than the old ones.