Prometon, 100 µg/ml, Acetonitrile, 1ml

Hopane and Sterane Biomar Mix, 10µg/ml in IO, 1ml

2,4,6-Tribromo[13C6]phenol, 1.2ml x 100ug/ml, toluene

2-Isopropyl-6-methyl-4-pyrimidinol, 1000µg/ml in Acetonitrile, 1ml