Chromatography is a powerful analytical tool that uses properties such as mass, ionic charge, and size to identify components in mixtures. We will present a chromatography lab using easily-sourced materials such as ball bearings and a (free) phone recording app. With these devices, students can create a calibration curve of ball bearings of known mass to identify a group of ball bearings of unknown mass. We encourage discussion about the ball bearing chromatography activity including modifications, improvements and how you could use this activity in your classroom.