EPA Method 552 Internal Standard Back Catalog number: 30055 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10134.35-K-IO 4-n-Nonylphenol decaethoxylate Price on request 3486.11-100-AN Pirimiphos-methyl, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 29232-93-7 Price on request 2127.12-10-IO Arochlor 1248 , 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 12672-29-6 Price on request