Imidacloprid D4, 100μg/ml in Acetone, 1ml

Hexachlorobenzene, 1000µg/ml in Isooctane, 1ml

Chloroform-13C,2000 µg/mL,MeOH,1mL,

Ethalfluralin, 100 µg/ml, Acetonitrile, 5ml