Heptachlor-endo-epoxide (trans-, isomer A), 100 ng/µl, 1ml

1,2,3,4,6,9-Hexachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

Tris(2,4-dimethylphenyl) phosphate-d27,100 µg/mL,isooctane,1mL,

1,3-Diisopropylbenzene