D9-Fluazifop-butyl, 100 µg/ml, Acetonitrile, 1ml

N-Nitrosodi-n-butylamine-d18, 1000µg/ml in MeOH, 1ml

Maprotiline hydrochloride,neat,neat,10mg,

EPA Method 533 Isotope Dilution Standard PDS, 1.2ml, methanol