Atrazine desethyl, 100µg/mL in MeOH, 1ml

C21 Tricyclic terpane X, neat, Solvent-neat, Unit ca. 5µg, # of units-1, Cas.no.

Heptachlor, 10µg/mL in Cyclohexane, 10ml

EPA Method 8310 Surrogate Standard