Trifluralin, 10.0 µg/ml, Ethyl acetate, 10ml

2,2',3,3',5,5',6-Heptachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Brilliant Blue FCF (E 133), 1g

Diflubenzuron, 10.0 µg/ml, Acetonitrile, 10ml