[13C12]Diphenyl ether, 1.2ml x 50ug/ml, nonane

EPA Method 8141/1657 Surrogate Standard

Naltrexone hydrochloride, neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 16676-29-2

Chlorimuron-ethyl, 100 µg/ml, Acetonitrile, 5ml