Ethidimuron, 100 µg/ml, Acetonitrile, 5ml

Bentazone D6, 100µg/mL in Acetonitrile, 1ml

2,2',4,4',6,6'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Iopromide, 100 µg/ml, Water, 1ml