Division 4.2.2.2 Mixing of the contents of large vessels or of storage, rail or road tanks can be carried out:

by a mechanical agitator built into the tanks and driven by an electric motor;

by a propellor or agitator driven by an electric motor and placed on the manhole with the agitator suspended in the milk;

in the case of rail or road tankers by recirculation of the milk through the transfer hose attached to the tanker unloading pumps and inserted through the manhole;

by clean filtered compressed air. In this case, minimal air pressure and volume should be used to prevent the development of rancid flavour.