Nicosulfuron, 1000µg/ml in Acetonitrile, 1ml

2,3,4,8-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane

2,2',4,4'-Tetrabromo-6-methoxy[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

Perfluoro-n-[1,2,3,4-13C4]butanoic acid, 50µg/ml in MeOH, 1,2ml