EPA Method 8032 Internal Standard

Dextromethorphan hydrobromide monohydrate,1000 µg base/mL,MeOH,1mL,

1,3,7,8-Tetrachlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane

1,2,3,4-Tetramethylbenzene