| 7 component PCB Congener mixture at 100 µg/mL in Isooctane in 1mL or 5mL ampules   2,4,4' - Trichlorobiphenyl (BZ-28)2,2',5,5' - Tetrachlorobiphenyl (BZ-52)
 2,2',4,5,5' - Pentachlorobiphenyl (BZ-101)
 2,3',4,4',5 - Pentachlorobiphenyl (BZ-118)
 2,2',3,4,4',5' - Hexachlorobiphenyl (BZ-138)
 2,2',4,4',5,5' - Hexachlorobiphenyl (BZ-153)
 2,2',3,4,4',5,5' - Heptachlorobiphenyl (BZ-180)
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