Most impression materials require mixing prior to use and automatic mixers can make this process simpler for a busy practice. These machines are preloaded with the impression material components, and then deliver a precise mix at the push of a button. Impression material automatic mixers eliminate the mixing errors that can occur when the material is mixed by hand. Additionally, automatic mixers can reduce material waste because they deliver a precise amount when filling an impression tray. When shopping for an impression material automatic mixer, it is important to be sure the model you choose is compatible with the impression materials you prefer to use. These units can be used with Polyether, VPS and alginate alternative materials.