2,2',4,4',5-Pentabromodiphenyl ether, 1.2ml x 50ug/ml, nonane

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

Ammonia as (NH4+)

PCB No. 55, 100µg/ml in Isooctane, 1ml