Tritolyl phosphate (Tech)

Isoxathion, 10 µg/ml, Ethyl acetate, 10ml

1,3,6,8-Tetrachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Disulfoton-sulfoxide, 100 µg/ml, Acetonitrile, 5