2,4-Di-tert-butylphenol, 100 µg/ml, Methanol, 1m

Isoproturon, 100 µg/ml, Acetonitrile, 5ml

2,3,3',4,4'-Pentachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

(E)-2-Octenedioic Acid, 100mg