Mass-Labelled Mono-Ortho PCB Solution/Mixture - 1.2ml in nonane, which contains the following;

NATIVE PCB CONGENERSIUPAC
2,3,3',4,4'-Pentachlorobiphenyl10510 µg/ml
2,3,4,4',5-Pentachlorobiphenyl11410 µg/ml
2,3',4,4',5-Pentachlorobiphenyl11810 µg/ml
2',3,4,4',5-Pentachlorobiphenyl12310 µg/ml
2,3,3',4,4',5-Hexachlorobiphenyl15610 µg/ml
2,3,3',4,4',5'-Hexachlorobiphenyl15710 µg/ml
2,3',4,4',5,5'-Hexachlorobiphenyl16710 µg/ml
2,3,3',4,4',5,5'-Heptachlorobiphenyl18910 µg/ml