MA - EPH Fractionation Surrogate Spike

2,3,7,8-Tetrachlorodibenzofuran,50 µg/mL,n-nonane,1mL,

1,2,4-Triazole, 1000µg/ml in Acetonitrile, 1ml

18O3-Sodium chlorate, 100 µg/ml water, 1ml