An additional experiment was performed wherein the stones
were removed from the flavor formulation to rule out the possibility,
although unlikely, that the flavorings contained toxic metals. The
first step was to weigh filtered 0.3 g and 0.1 g of Mya rocks and
Shiazo stones, respectively, into vials. The samples were then put
through the same hot water extraction as the experiment described
above. The results confirmed that the majority of the metals, both
major and toxic, were indeed coming from the steam stones and
not the flavored coatings.