Uniconazole, 100 µg/ml, Acetonitrile, 5ml

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

tert-Butyl hydroquinone (TBHQ)

Chlormequat chloride, 100 µg/ml, Water, 1ml