Pyridaphenthion, 10.0 µg/ml, Ethyl acetate, 10ml

Naphthalene-1,2,3,4,9,10-13C6,100 µg/mL,n-nonane,1mL,

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

1,2,4,7,9-Pentachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene