Internal Standard Stock Solution, 1.2ml, nonane

Paraoxon-ethyl, 10.0 µg/ml, Ethyl acetate, 10ml

4-Chlorophenol-2,3,5,6-d4, OD, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-5, Cas.no. 344298-84-6

Chlorfenvinphos, 100 ng/µl, 1ml