The vision of PSLab is to miniaturize laboratories and make scientific instruments accessible for everyone. There are a lot of problems in the world from environmental problems, to daily challenges in our personal lives, to challenges we face in work life. In order to solve these problems we need to understand the world around us. Open Source labs that are small and accessible enable us to do our own experiments and collect our own independent data to do just that. We can also verify official data, e.g. air quality, by doing our own measurements using sensors. Or, use the out of the box tools for measurements of electronics devices and components to ensure they work as expected. Whatever measurements we do freely licensed Open Source applications and hardware ensure that experiments are replicable and verifiable. They are trustworthy because all layers are open and can be build up from the ground by anyone.