An identification arrangement identifies animals, and only when a milk permission criteria is fulfilled is that animal provided with access to the milking machine. A remote monitoring workstation monitors devices connected to a network using IP-based SNMP commands and stores the device monitoring information in a database. , adding a nonylphenol polyoxyethylene ether, and stirring for between 3 and 5 min to yield a mixture; and b) cooling the mixture to between 30 and 100\xb0 C.