Dioxabenzofos, 100 µg/ml, Acetonitrile, 1ml

1,2,3,4,8,9-Hexachloro(13C12)dibenzofuran, 1.2mL x 50ug/mL, toluene

2,2',3,4,4',5,6'-Heptabromodiphenyl ether, 1.2ml x 50ug/ml, nonane

Fluorene-d10, 1000µg/ml in methylene chloride, 1ml