Native PBB Solution/Mixture, 1.2ml, nonane

Decabromo[13C12]biphenyl, 50µg/ml in Nonane/50% toluene, 1,2ml

25-Hydroxyvitamin D2 (95%)

2-Perfluorooctyl ethanoic acid (8:2), 50µg/ml in Isopropanol, 1,2ml