When it comes to using vacuum pumps, there are some common mistakes that can happen in the laboratory. University labs, where graduate students rotate out every few years, are particularly prone to these types of mistakes. A lot of vacuum knowledge can be lost as older, more senior grad students leave and new students take over. If they haven't had time to learn best practices and get proper training on the equipment, accidents are more likely to happen. However, these accidents can happen in any lab where proper procedures aren't being followed when using vacuum pumps.