EPA Method 528 Fortification Solution

Cyclopent[hi]indeno[4,3,2,1-cdef]chrysene, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 171877-64-8

O-Desmethyl tramadol-d6 (racemic) , 100µg base/mL, Solvent-methanol, Unit 1mL, # of units-5, Cas.no. 16412-54-7

Ethylbenzene, 1000µg/ml in MeOH, 1ml