Fenthion-oxon-sulfone, 10µg/mL in Acetonitrile, 1ml

d2 C29 alpha alpha alpha (20R)-Ethylcholestane, 10µg/mL in Osooctane, 1ml

EPA Method 525 Surrogate Standard

Penoxsulam, 100 µg/ml, Acetonitrile, 1ml