Atrazine 13C3, 100μg/mL in Acetone, 1ml

4-methylphenanthrene, 25mg

N-Ethyl-N-(2-hydroxyethyl)nitrosamine,neat,neat,10mg

b-1,2,3,4,5,6-Hexachlorocyclohexane, 1.2mL x 100ug/mL, nonane