DIN EN 61198:1995 Mineral insulating oils - Methods for the determination of 2-furfurol and related compounds (IEC 61198:1993); German version EN 61198:1994
1995DIN EN 61198:1995 Mineral insulating oils - Methods for the determination of 2-furfurol and related compounds (IEC 61198:1993); German version EN 61198:1994