2-Chloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

Crotoxyphos, 10.0 µg/ml, Isooctane, 10ml

2,2',3,3',4,4',6-Heptachlorobiphenyl ,100 µg/mL,isooctane,1mL,

2,4-D, 10.0 µg/ml, Acetonitrile, 10ml