EPA Method 551 - Disinfection By-Products Back Catalog number: 32852 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-LCS-B Mass-Labelled PCDD/PCDF Solution/Mixture, 1.2ml, nonane Price on request 676630 Anthranilic acid isopropylamide, 100mg Price on request CA11350000 2-Chloroaniline, 500mg Price on request