(spoiler) where are the chemicals???

[Jimbo]

ok i found the other two but now im stuck with without iodine....

I'm almost certain it's

Spoiler below!

in the Research Room, either in Dr Swansons office or in one of the two rooms off the larger one with the box on the chain (in the back of the Research Room).

It f***ng isn't I searched for over one hour now, and I can't find it, dammend! I moved, touched, looked @ everything...nada!

Can't you give an exact answer?