EPA Method 604.1 Analytes Back Catalog number: 40004 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673253 Desmedipham, 100 µg/ml, Acetonitrile, 5ml Price on request 90325 Methyl-t-butyl ether Price on request 96730 Diethylene glycol Price on request