EPA Method 552.1 - Surrogate Standard Back Catalog number: 31057 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675470 Triflumizole Metabolite FM-1-1, 10 µg/ml, Acetoni Price on request DF-LCS-C200 Mass-Labelled PCDD/PCDF Solution/Mixture, 1.2ml, nonane Price on request 675869 Rifaximin, 100mg Price on request