Not being a chemist, I'm a little lost on how to get 10% Potassium Bromide from the stuff I've bought from Formulary. it's a combination of solids and pellets in a plastic container, but does not say if it is a "percentage" of anything. I'm assuming the solids need to be desolved and mixed with distilled water, but how then do I get to the gram amounts that I need. It would make sense to me that the chemicals already are a 10% makeup and all I need to do is measure out the appropriate amount of grams. Just want to be sure. Thanks.