Chloridazon-d5, 10µg/ml in Acetonitrile, 5ml

EPA Method 525.2 - Internal Standard, 2000µg/ml in MeChl, 1ml

1,1-Dichloro-2,2-bis[4-chloro(13C6)phenyl]ethane, 1.2mL x 100ug/mL, nonane

N-Nitrosodiethylamine