Perfluoro-5-oxahexanoic acid (PFMBA), 50µg/ml in MeOH, 1,2ml

Sodium (Na)

1,2,3,7,8,9-Hexachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

2,2,4,6-Tetrachlorobiphenyl (BZ-50)