The agitation is what keeps your product in suspension throughout the injection process. The mechanical agitation can be driven by 3PH, 1PH,or 12 volt motors. The prop and shaft are made of 316 stainless steel for maximum durability. Mechanical agitation is recommended for products that need vigorous mixing to stay in solution. Air agitation (pictured at top) is also available, it is powered by the injection pump. Air agitation is used for products that do not need vigorous mixing to stay in solution.