EN 12916: System calibration standard 7 components: Cyclohexane [CAS:110-82-7] 1% (w/v) ; 1-Phenyldodecane [CAS:123-01-3] 0.1% (w/v) ; o-Xylene (1,2-Dimethylbenzene) [CAS:95-47-6] 0.5% (w/v) ; Hexamethylbenzene [CAS:87-85-4] 0.1% (w/v) ; Naphthalene [CAS:91-20-3] 0.1% (w/v) ; Dibenzothiophene [CAS:132-65-0] 0.05% (w/v) ; 9-Methylanthracene [CAS:779-02-2] 0.05% (w/v) in n-Heptane