Used vertical propeller agitator by Stober (DE) with contact parts designed in stainless steel. Agitator has three blades propeller with diameter 180 mm. Working length of shaft is 770 mm. Agitator is driven through el. motor 0.75 kW, 1405 rpm, 220/380V, 50 hz, via varispeed gearbox with manual adjustment of rotation. Working rotation range from 149 up to 1040 rpm. Motor is Ex design (Exete). Agitator is bolted to stainless steel column with total lenght 197 cm. Bottom part of column is round on the lenght 12 cm, what makes possible to arange agitator as rotating mixer. Height of agitator is adjustable manualy in range 100 cm.