Parathion-ethyl, 100mg

2,3',4,4',5-Pentachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Azinphos-ethyl, 10.0 µg/ml, Acetonitrile, 10ml

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