N-Nitroso-di-n-butylamine, 100 µg/ml, Methanol,

2,2’-Dinitrodiphenylamine

3-Perfluoroheptyl propanoic acid (7:3), 1.2ml x 50ug/ml, methanol

D10-Diphenylamine, 100 µg/ml, Ethyl acetate, 1ml