PCB Calibration mixture (acc. Guideline for Waste Fuels 2007/0697/A)_x000D_ 7 components: 10ug/ml each of PCB 28 [CAS:7012-37-5] ; PCB 52 (2,2',5,5'-Tetrachlorobiphenyl) [CAS:35693-99-3] ; PCB 101 (2,2',4,5,5'-Pentachlorobiphenyl) [CAS:37680-73-2] ; PCB 118 (2,3',4,4',5-Pentachlorobiphenyl) [CAS:31508-00-6] ; PCB 138 (2,2',3,4,4',5'-Hexachlorobiphenyl) [CAS:35065-28-2] ; PCB 153 (2,2',4,4',5,5'-Hexachlorobiphenyl) [CAS:35065-27-1] ; PCB 180 (2,2',3,4,4',5,5'-Heptachlorobipheny) [CAS:35065-29-3]