EPA Method 624 Internal / Surrogate Standard Back Catalog number: 92559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1833.17-K-IO Ethylene glycol mono(p-nonylphenyl) ether, mixture of isomers, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 30051 EPA Method 550 Analytes Price on request 678146 1-Bromotetradecane, 250mg Price on request