Pros
Good for resumes. You will learn a lot of different techniques and get training on many chemistry tests. You can then take that knowledge and use it in an interview when you get a real job. They are a legit business, nothing they do is illegal, so that's nice.
Cons
Terrible everything. If you can imagine a way that a lab could be terrible, this place has it. With the exception of a new TOC analyzer and two calorimeters everything is old and constantly breaks down. Wages are poor. If you are a driver you can expect long drives across the state, sometimes without OT, in old, high mileage vehicles that will break down. Management is not reliably present and will fight with each other in front of employees. You will be yelled at. There is no consistent waste management system, instead they just let it pile up until it takes up all available space.