Internal Standard Stock Solution, 1.2ml, nonane

Esfenvalerate, 100 µg/ml, Ethyl acetate, 5ml

Atrazine-desethyl-2-hydroxy, 100µg/ml in AL, 5ml

n-Butyl n-pentyl phthalate, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 3461-29-8