EPA Method 527 Surrogate Standard Back Catalog number: 95053 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54173 Total Iron (Fe II and Fe III) Price on request 98452 Phenols Standard Price on request 0271.24-10MG Naphtho[2,3-k]fluoranthene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 207-18-1 Price on request