2-Bromothiophene in isooctane, Blank Units: 5x1mL ampoules

1,2,3,4,6,7,8-Heptachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

25-Hydroxyvitamin D3, 50μg/ml, 1ml

4-Methylimidazole, 100mg