2,3,3',5-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL,

Difloxacin hydrochloride, 100 µg/ml, Methanol, 1

Internal Standard Solution, 1.2ml, nonane

d18-γ-1,2,5,6,9,10-Hexabromocyclododecane, 50µg/ml in Toluene, 1,2ml