Initial Check Verif. Standard 4, in 4%HNO3, 100ml

Cyprodinil, 100 µg/ml, Ethyl acetate, 5ml

Methiocarb, 100 µg/ml, Ethyl acetate, 5ml

d2 C27 alpha alpha alpha (20R)-Cholestane, 100µg/mL in Isooctane, 10 x 1ml