EPA Method 8260B Internal Standard Back Catalog number: 22213 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676503 3,5-Dimethylphenol, 500mg Price on request 3174.5-K-IO Ethyl propanoate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 105-37-3 Price on request 57234 Selenium (Se) Price on request