3-Nitrobenzofuran,100 µg/mL,toluene,1mL,

Clofibrate,100 µg/mL,MeOH,1mL,

4-Nonylphenol diethoxylate, mixture of nonylisomers,100 µg/mL,isooctane,1mL,

Theophylline, 100µg/ml in MeOH, 5ml