EPA Method 630/630.1 Stock Solution #2 Back Catalog number: 40025 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681349 1-Naphthyl acetic acid-ethyl ester, 250mg Price on request 1540.12-K-TX10 4-Aminobiphenyl-d9, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-10, Cas.no. 344298-96-0 Price on request 672922 Chlorbenside-sulfoxide, 100mg Price on request