Isoproturon D6 (dimethyl D6), 100 ng/µl, 1.1ml

4-tert-Butylphenyldiphenyl phosphate-d13,100 µg/mL,isooctane,1mL

Endrin ketone, 100 µg/ml, Acetonitrile, 1ml

1,2,3,5,6,7-Hexachloro(13C10)naphthalene, 1.2mL x 50ug/mL, nonane