Mefenacet, 100 µg/ml, Acetonitrile, 1ml

EPA Method 8121 Analytes, 1000µg/ml in HE:TO [1:1], 1ml

Carvedilol, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 72956-09-3

Theophylline