D8-1,4-Dioxane, 100 µg/ml, Methanol, 1ml

EPA Method 8270A - Mix #15

D8-4,4'-DDT, 100 µg/ml, Acetone, 1ml

(±)-Sotalol-d7 hydrochloride (isopropyl-d7),100 µg/mL,MeOH,1mL,