A system comprising: a control unit ; a dosing module comprising a pump ; a milk analysis apparatus ; and a milk extracting arrangement , operating in conjunction with the milk analysis apparatus ; characterised in that the dosing module comprises a memory device and a second wireless communication device , which dosing module is insertable into the milk analysis apparatus , for information exchange with the control unit of the milk analysis apparatus via a first wireless communication device of the milk analysis apparatus ; wherein the memory device is configured to: receive information concerning a measurement relating to usage of the pump from the control unit of the milk analysis apparatus , via the second wireless communication device ; and store the received information; wherein the milk analysis apparatus comprises the first wireless communication device , for communication with the memory device of the dosing module , via the second wireless communication device comprised in the dosing module , and wherein the control unit is configured to: determine a measurement relating to usage of the pump ; and transmit information concerning the determined measurement to the memory device of the dosing module , via the first wireless communication device , for storage in the memory device of the dosing module . a control unit ; a dosing module comprising a pump ; a milk analysis apparatus ; and a milk extracting arrangement , operating in conjunction with the milk analysis apparatus ; characterised in that the dosing module comprises a memory device and a second wireless communication device , which dosing module is insertable into the milk analysis apparatus , for information exchange with the control unit of the milk analysis apparatus via a first wireless communication device of the milk analysis apparatus ; wherein the memory device is configured to: receive information concerning a measurement relating to usage of the pump from the control unit of the milk analysis apparatus , via the second wireless communication device ; and store the received information; wherein the milk analysis apparatus comprises the first wireless communication device , for communication with the memory device of the dosing module , via the second wireless communication device comprised in the dosing module , and wherein the control unit is configured to: determine a measurement relating to usage of the pump ; and transmit information concerning the determined measurement to the memory device of the dosing module , via the first wireless communication device , for storage in the memory device of the dosing module . receive information concerning a measurement relating to usage of the pump from the control unit of the milk analysis apparatus , via the second wireless communication device ; and store the received information; wherein the milk analysis apparatus comprises the first wireless communication device , for communication with the memory device of the dosing module , via the second wireless communication device comprised in the dosing module , and wherein the control unit is configured to: determine a measurement relating to usage of the pump ; and transmit information concerning the determined measurement to the memory device of the dosing module , via the first wireless communication device , for storage in the memory device of the dosing module . <EOS>