By this standard the terms for metal working fluids shall be defined to facilitate communication. Various more historical terms and synonyms are to be replaced by terms according to this standard.
DIN 51385:1991 history
2013DIN 51385:2013-12 Lubricants - Processing fluids for forming and machining of materials - Terms
2013DIN 51385:2013 Lubricants - Processing fluids for forming and machining of materials - Terms
1991DIN 51385:1991 Lubricants; metal working fluids; terms