S-Metolachlor, 100 µg/ml, Acetone, 1ml

N-Demethylolanzapine,1000 µg/mL,acetonitrile,1mL,

d4 C27 alpha alpha alpha (20R)-Cholestane, 100µg/mL in Isooctane, 1ml

VPH Internal - Surrogate Standard Draft 01-2012