PCB Isomer Standard “Dutch 7”, 10µg/ml in Isooctane, 1ml

13C3-Caffeine, 100 µg/ml, Methanol, 1ml

Carbazole-d8, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-10, Cas.no. 97960-57-1

Mix of deuterated PCBs (28,52,101), 100µg/ml in Nonane, 1ml