What do you do when you get da first leech in that case were you need something..

In order for you to open the container you have to have a stripping agent. In order for you to make the stripping agent you need to have rebecca mix the red and green chemicals together in her mixing kit. Heres how you get the red chemical, levave the room that you got the leeche container from, now you should be in the hallway, once in the hallway go all the way to the end and go through the door, once through the door turn left and walk straight. Go all the way to the end until you see this machine looking thing. The red chemical is next to it in a big red container.Go up to the container and it will ask you is you want to put it in the mixing set, say yes.In order to get the green chemical go to, not through, the door that you came from. Once here look for the double doors next to you and go through them. Once through them walk all the way to the weird green door. Once here keep going straight and turn right. The green container is somewhere in this room.Once you found the container go up to it and put it in the mixing set, it will ask you if you want to mix the red and green chemicals together , say yes.Now you have your stripping agent. After that combine the stripping agent with the leech container and it should open.
I hope i helped you some.Good luck.