EPA Method 601 Analytes, 2000µg/ml in MeOH, 1ml

2-Methylquinoxaline, 1000mg

2,3-Dibromo-7,8-dichloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

4-Dimethylaminoazobenzene