Hi Anja
It should be in the spec
DIN 51502:1990
Designation of lubricants and marking of lubricant containers, equipment and lubricating points (FOREIGN STANDARD)
In the standard designation of lubricants and marking of the containers for lubricants, lubrication equipment and lubrication points are established in order to preclude damages due to mix-up of lubricants during application.
You can purchase here
http://webstore.ansi.org/RecordDetail.aspx?sku=DIN+5150...7WiZYCFST7iAodySyrEwRegards
Rob S