There are many ways to determine the molecular weight of a polymer in the lab. General methods include permeation chromatography (GPC), matrix-assisted laser desorption/ionization time-of-flight mass spectroscopy (MALDI-TOF MS), solution viscosity, cryoscopy, light scattering, and boiling point elevation. While other methods of molecular weight of polystyrene determination use a single procedure, this experiment utilizes various methodologies and equipment to find the molecular weight of polystyrene, thus exposing the student to many laboratory techniques while also employing a simpler and low-cost analysis.