2,2',4,4'-Tetrabromodiphenyl ether, 1.2ml x 50ug/ml, nonane

3 Fluorinated Internal Standard Mix 3 Analytes, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% Fluorobenzene 39.7 1-Fluoronaphthalene 20.9 4-Ethyl-

4-Ethylguaiacol, 100 µg/ml, Acetonitrile, 1ml

3-Bromo-2,7,8-trichloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene