EPA Method 505Mix

2,2',3,3',4',5-Hexachloro-4-biphenylol, 1.2ml x 50ug/ml, nonane

Sulfur in Light Weight Mineral Oil - 0.10 Wt%

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