Initial Check Verif. Standard 4, in 4%HNO3, 100ml

Dibromoacetonitrile, 250mg

1,1-Dichloro-2-[2-chloro(13C6)phenyl]-2-[4-chloro(13C6)phenyl]ethene, 1.2mL x 100ug/mL, nonane

Dibenz[a,j]anthracene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 224-41-9