Currently you click an item, select break-down, and then the check mark. x50, x100, and so forth.
It would be nice instead to add a break-down button which puts the players inventory into a salvaging state. Selecting items during this state will add them to the “break the item down” list, highlighting every item that you click(that is valid for break down). When you click the check mark, it breaks every item in the list all at once. Selecting an item again removes it from the break-down list (plz make the highlighting obvious). Click cancel to stop the whole thing altogether. Perhaps even add a few more buttons during this state, “select all greens”, “select all blues”