Used 40 gallon Ross double planetary mixer, model DPM 40, stainless steel contact parts, vacuum hood with 2 small ports (1 sight glass), a third larger charging port, vacuum port and gauge, light port. (1) 40-gallon non-jacketed mixing can mounted on casters, mechanical variable speed control drive, with operator interface control panel, air over oil hydraulic lift with air tank, on base with vacuum pump. Previous use was dental products. Ross Serial No. 100703.