I was confused about what I needed to do at the beginning. After exploring for quite some time, I found a blue book and a key. Then, I knew what I had to do.
The conical flask (not a beaker) was hard to get cos the message, "nothing is useful here" appeared a lot of the time when I was searching the cupboards. Therefore, I missed the jammed one until I glanced the walk through.
The bucket filled with water could only be emptied inside Section 7 or bathrooms. I wish I could tip it at the sink inside the lab so that I didn't have to travel back and forth.