Monoethyl phthalate-3,4,5,6-d4, 100µg/ml in MeOH, 1ml

1,2,3,4,6,7,8-Heptachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

2,2',3,5,6-Pentachlorobiphenyl ,100 µg/mL,isooctane,1mL,

Isodrin, 10.0 µg/ml, Cyclohexane, 10ml