Parathion-ethyl, 100 µg/ml, Toluene, 1ml

Pyriofenone, 100 µg/ml, Acetonitrile, 1ml

DL-N-Nitrosonornicotine-d4, 1000µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 66148-19-4

PCB Isomer Standard, 100µg/ml in Isooctane, 1ml