Heptachlor-endo-epoxide (trans-, isomer A), 100 ng/µl, 1ml

(S)-Pregabalin, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 148553-50-8

Fenthion, 10.0 µg/ml, Acetonitrile, 10ml

Spiking Standard #2