4,4'-DDT (ring-13C12), 100ug/ml in n-Nonane, 1,2ml

n-Pentacosane, ?13C: -28.21, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 629-99-2

Lead (Pb)

Prometryn, 100μg/ml in Acetonitrile, 5ml