Dangerous chemicals can be left behind, unless Elizabeth sees an urgent need for anything. This trip is more about taking advantage of underutilized resources and gaining intelligence than anything else.
Knowledge/Craft checks to see if there's anything relevant to the city's current situation in the lab, here:
Knowledge (Physical Sciences) = 1d20+10:
Rolled 1d20+10 : 4 + 10, total 14
Craft (Chemical) = 1d20+10:
Rolled 1d20+10 : 3 + 10, total 13