Composition: PCB 28 10µg/ml [7012-37-5]PCB 52 10µg/ml [35693-99-3]PCB 101 10µg/ml [37680-73-2]PCB 138 10µg/ml [35065-28-2]PCB 153 10µg/ml [35065-27-1]PCB 180 10µg/ml [35065-29-3]