Wisconsin DNR GRO Standard

1,2,3,4,8,9-Hexachlorodibenzofuran, 1.2ml x 50ug/ml, toluene

Carbetamide-d5 (phenyl-d5),100 µg/mL,acetone,1mL,

Naphthalene-d8, 100 µg/mL,toluene, 1mL