Chemicals

[Jonsp]

I have just started playing black plague again after leaving it since the summer. I am pretty sure I have put all the chemicals into the machine because all of the joining rooms are trashed from me searching them wall to wall. I just put the blue chemical thing into the machine. I have no other chemicals or anything usefull in my inventory. When I press any button on the machine it tells me that i am missing compounds... Are all chemicals in these 5 rooms and the other room you need to escape from?
Can you tell me if i have done anything wrong or if I am just missing something?