13C6-Sulfamethazine, 10mg

Acetylsalicylsalicylic acid, neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 530-75-6

Phenanthrene-d10, 1000µg/ml in MethyleneChloride, 1ml

Diphenylamine, 100 µg/ml, Ethyl acetate, 1ml