Surrogate fortification standard

2,3,6,7-Tetrachloronaphthalene, 1.2ml x 50ug/ml, nonane

Dibenzofuran, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 132-64-91

1-Heneicosanol, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 15594-90-8