The plastic polypropylene beakers are reusable and have blue graduations that assist in making legible and efficient measurements. Each kit comes with 1 of each specifically sized beaker. You can view which plastic beakers are included in this kit above. These beakers feature a vertical lip around the top of the beaker which helps contain spills and allows the polypropylene beakers to be stacked together when not in use. The pour spot on the lip of the plastic beakers helps direct the flow of your products when pouring.