Verapamil

2,2',5,6'-Tetrachlorobiphenyl, neat, Solvent-neat, Unit 10MG, # of units-1, Cas.no. 41464-41-9

Chrysene-trans-3,4-dihydrodiol, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 64920-32-7

EPA Method 8260B Mix #5