Internal & Surrogate Standard

1,2,3,6,7,8-Hexachlorodibenzofuran,50 µg/mL,n-nonane,1mL,

n-Decane, 100 µg/ml, Hexane, 10ml

(±)-Methoxyverapamil hydrochloride,1000 µg base/mL,MeOH,1mL,