Ethyl-tert-butylether, certified, 100mg

3,4,4'-Trichloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

PCDD/PCDF/PCB Calibration Kit, 7 x 200ul, nonane

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