Crotoxyphos, 100 µg/ml, Isooctane, 1ml

4-Bromo[13C6]phenol, 1.2ml x 100ug/ml, toluene

Di-iso-butyl phthalate, 1000µg/ml in Isooctane, 1ml

2,3,4,5-Tetrachlorophenol acetate, 10.0 µg/ml, Is