Vacuum mixer is a equipment for mixing gypsum or plaster when producing the dental gypsum model.   In case of dental gypsum model, for exact fitness of teeth, producing without bubbles is the important thing.
Therefore, gypsum should be mixed uniformly without bubbles, and if mixed by hand using spatula, bubbles may enter during the mixing process. Vortex(DS-800) minimizes bubbles by mixing gypsum at vacuum condition, and helps to get stable results with various mixing and vacuum modes.