All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
It is permissible for you to work in that lab; and we hope that your touching alcohol is forgiven because of need.
However, when you want to pray, you should first purify the parts of your body that came in contact with alcohol, because alcohol is impure according to the majority of the jurists.
Allaah Knows best.