Isopropalin, 100 µg/ml, Ethyl acetate, 5ml

4-tert-Octylphenol-13C6monoethoxylate

Sodium bis(1H,1H,2H,2H-[1,2-13C2]perfluorooctyl)phosphate, 50µg/ml in MeOH, 1,2ml

2,2'-Methylenedianiline, 10mg