Heptachlor, 100 µg/ml, Acetonitrile, 1ml

1,2-Dichloronaphthalene,50 µg/mL,isooctane,1mL,

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

Sebuthylazin-desethyl, 100 µg/ml, Acetonitrile,