Propionate standard

2-Aminofluorene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 153-78-6

2-(4-Bromophenyl)-1H-benzimidazole, neat, Solvent-neat, Unit 10MG, # of units-2, Cas.no. 2622-74-4

Selenium standard