2,5-Dichloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Selenium (Se)

Silver (Ag), 1000µg/ml in 2%-HNO3/Water, 100ml

Dibenzo[a,i]pyrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 189-55-9