D5-Atrazine, 100 µg/ml, Acetone, 1ml

EPA Method 502/524 Surrogate Standard #3, 2000µg/ml in MeOH, 1ml

4-Chloro-3-methylphenol-2,6-d2, 2,5mg

Dibenzo(a,h)anthracene, 100µg/ml in Acetonitrile, 1ml