Interview section had two rounds with a written test in between, which I was not notified of. Talked to one person in each round. One was a chief science officer, and another was a QC/QA director. The conversations were chilled. They did not ask any technical questions, but just to talk to learn about you and your personalities. However, the written test was extremely difficult (at least for me). There were four questions and you have to finish in forty five minutes. The questions tested you if you can make solutions with specific volume/concentration from other reagents/solutions, and other technical stuff (yeah sounds easy, but good luck!)