Traditionally, flotation plant operators have had to depend on visual assessments of froth appearance when making operative decisions. The FrothSense system measures several essential properties of froth appearance, including froth speed, direction, bubble size, froth stability and froth color, while also providing statistical data related to these variables. The measured froth properties, together with onstream analyzer assays, allow the creation of efficient and robust strategies for advanced flotation process control by using a system such as Outotec ACT.