EPA Method 552 Internal Standard Back Catalog number: 30055 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1945.19-10MG 4-Fluoro-1-methoxychrysene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. Price on request X9095 Dinoseb Price on request DF-IS-E40 Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request