EPA Method 604.1 Analytes Back Catalog number: 40004 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended L20950009AL PAH-Mix 9, 10µg/mL in Acetonitrile, 10ml Price on request 92970 Diethylbenzenes Price on request 79326 tert-Butyl hydroquinone (TBHQ) Price on request