the whole absurdity of stating a %(w/v) should become clear when
you give the %age of a concentrated H2SO4 solution: it has 180%!
what the heck is a 180% solution!? is there more in the solution
than the solution itself!? if i ever make such a thing i know what
to do: drop it and run as fast as i can out of fear that if colapses
into a singularity and opens a worm hole... i mean having a few ml of
physical impossibility can not be healthy....
and while we're at it, %(v/v) sucks too for everything but perfect
gases or liquids: with what volume are you working, the volume of
the pure isolated substance or the effective volume inside the
solution? i think i'll write a nastygramm to my beer supplier...