I enjoy the actors in the show, but the plot line needs some serious work.
The good looking, successful Thai business woman gets to take the fall...as if we didn't see THAT coming.
I know some "liberties" get taken with the science, but this one was ridiculous. The pH of the green mystery cocktail should have been about 13, not 14. Doesn't seem like a big difference until one realizes that it represents a difference of a factor of 10. In the real world, 90% inaccuracy would get them shut down.
There is no way possible to match the sodium hydroxide back to the source, unless it had a radioactive marker or something. DNA links DNA, not chemical to chemical. The concentration in the body would have changed it as well, so the "purity" factor is moot.