I checked in and had to read an SOP to walk into the facility. I was greeted by the Interim Manager at the time, and spoke with him for 30-45 minutes, before seeing both the Supervisor and a Scientist and speaking with them for the same amount of time. The interview was only supposed to be for 1 hour but I asked a lot of questions, and we had to move to another room so it lasted for 1 hour and 30 minutes. I'd say it went really well as I made them laugh and I asked questions about what they liked about the company, and how long they've been with the company, etc. I would say just dress professionally, speak well, answer the questions to the best of your ability, and be genuine. They want someone who will fit in with the group, so let your personality shine. They did ask about my experience, what equipment I've used, and some technical questions to be prepared to talk minimal science jargon.