Copper (Cu) - 1 PPM

1,2,3,4,6,7,9-Heptachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Chrysene-d12, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1719-03-5

N-Nitroso-N-methylaniline, 100μg/ml in MeOH, 5ml