A milk conveyer device for a milking arrangement comprising: - a milk storage reservoir; - a plurality of milking units each comprising a milking attachment for attaching to an animal to be milked; - a plurality of main milk conduits (103,105), each milk conduit being coupled to one of the milking attachments and the milk storage reservoir, for conveying milk from the milking attachments to the storage reservoir; the milk conveyer device further comprising: - an analysis element for analysing at least one selected characteristic of an analysis milk sample generated from a milk analysis quantity; - a plurality of milk sample units, each of which being associated with one of the milking units and each of which comprises a sample element (107,109) for extracting sample milk quantities from the milk of one of the main milk conduits (103,105); - a plurality of sample reservoirs (115,117) each of which coupled to -one of the sample elements (107,109) for collecting the sample milk quantities to generate the milk analysis quantity; - a plurality of analysis conduits (123,125), each of which coupled to one of the sample reservoirs (115,117) for conveying the milk analysis quantity from the sample reservoirs to the analysis element; and - a selector unit (127,300) coupled to the plurality of analysis conduits (123,125) of the milk sample units, the selector unit (127,300) being operable to couple milk from one of the plurality of analysis conduits (123,125) to the analysis element at a time, wherein the selector unit comprises: - a chamber, - an inlet to the chamber for each of the plurality of analysis conduits (123,125) for each milk sample unit, each inlet being operable to provide a flow of milk analysis quantities into the chamber, an outlet coupled to the analysis element, and - an arm which is axially and pivotally mounted such that it is able to rotate a collection member to any of the inlets thereby providing a coupling between the inlet and the collection member which collection member is by the aid of the arm coupled to the outlet through which a part of the milk analysis quantity can be fed to the analysis element. - a milk storage reservoir; - a plurality of milking units each comprising a milking attachment for attaching to an animal to be milked; - a plurality of main milk conduits (103,105), each milk conduit being coupled to one of the milking attachments and the milk storage reservoir, for conveying milk from the milking attachments to the storage reservoir; - an analysis element for analysing at least one selected characteristic of an analysis milk sample generated from a milk analysis quantity; - a plurality of milk sample units, each of which being associated with one of the milking units and each of which comprises a sample element (107,109) for extracting sample milk quantities from the milk of one of the main milk conduits (103,105); - a plurality of sample reservoirs (115,117) each of which coupled to -one of the sample elements (107,109) for collecting the sample milk quantities to generate the milk analysis quantity; - a plurality of analysis conduits (123,125), each of which coupled to one of the sample reservoirs (115,117) for conveying the milk analysis quantity from the sample reservoirs to the analysis element; and - a selector unit (127,300) coupled to the plurality of analysis conduits (123,125) of the milk sample units, the selector unit (127,300) being operable to couple milk from one of the plurality of analysis conduits (123,125) to the analysis element at a time, wherein the selector unit comprises: - a plurality of analysis conduits (123,125), each of which coupled to one of the sample reservoirs (115,117) for conveying the milk analysis quantity from the sample reservoirs to the analysis element; and - a selector unit (127,300) coupled to the plurality of analysis conduits (123,125) of the milk sample units, the selector unit (127,300) being operable to couple milk from one of the plurality of analysis conduits (123,125) to the analysis element at a time, wherein the selector unit comprises: - a chamber, - an inlet to the chamber for each of the plurality of analysis conduits (123,125) for each milk sample unit, each inlet being operable to provide a flow of milk analysis quantities into the chamber, an outlet coupled to the analysis element, and - an arm which is axially and pivotally mounted such that it is able to rotate a collection member to any of the inlets thereby providing a coupling between the inlet and the collection member which collection member is by the aid of the arm coupled to the outlet through which a part of the milk analysis quantity can be fed to the analysis element. - an arm which is axially and pivotally mounted such that it is able to rotate a collection member to any of the inlets thereby providing a coupling between the inlet and the collection member which collection member is by the aid of the arm coupled to the outlet through which a part of the milk analysis quantity can be fed to the analysis element.