2,4'-DDD, 100 µg/ml, Acetonitrile, 5ml

Citric acid monohydrate, 100mg

n-Octadecane-d38, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 16416-31-2

EPA Method 8141/1657 Surrogate Standard