Pyrethrins, 100 µg/ml, Ethyl acetate, 1ml

2,3,8-Trichloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

trans-Nonachlor, 100 µg/ml, Acetonitrile, 1ml

3,3',5,5'-Tetrabromobisphenol A bis(2-hydroxyethyl) ether bisacrylate,50 µg/mL,toluene,1mL Certan,