Total Iron (Fe II and Fe III) Back Catalog number: 54173 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0236.20-200-T Benzo[e]pyrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 192-97-2 Price on request EPA-1668LCS Labelled Compound Stock Solution, 1.2ml, nonane Price on request 9059.7-K-IP 3,4,5-Trichloroguaiacol , 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 57057-83-7 Price on request