Innovative and easy to use mixer machine suitable for investment and plaster materials. A pneumatic locking mechanism holds up the mixing bowls firmly in place (Ventury system). The vacuum can be adjusted as desired. Determine and regulate the mixing times with the help of a digital timer showing minutes and seconds (Maximum: 9´59´´) Vacuum by means of compressed air instead of a vacuum pump. It saves space and is much quieter. This equipment work with bowls of different volumes. There are 3 measures; two of them are included with the MIXER-804. The big model is optional. Can be placed on the wall. As an option we offer a structure to position and work on the laboratory desk.