EPA Method 552 Internal Standard Back Catalog number: 30055 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8029.10-10G Perfluoronaphthalene, , Solvent-, Unit 10g, # of units-, Cas.no. 313-72-4 Price on request 2500.11-K-IP 2-Cyclopentyl-4-chlorophenol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 13347-42-7 Price on request 672812 Amitrole, 250mg Price on request