4,4’-DDE

2,3,3',4,4',5,5',6-Octabromo[13C12]diphenyl ether, 1.2ml x 50ug/ml, toluene

Ethyl acetate, 1000µg/ml in MeOH, 1ml

(E,Z)-Methomyl-d3 (N-methyl-d3),100 µg/mL,acetonitrile,1mL,