Tetrachloroethene, 100 µg/ml, Methanol, 5ml

Diindeno[4,3,2,1-cdef;1',2',3'-hi]chrysene,neat,neat,ca. 0.1mg,

1,2,7,8-Tetrachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

2,3,3',4,5'-Pentachlorobiphenyl ,100 µg/mL,isooctane,1mL,