EPA Method 548.1 Analyte Back Catalog number: 30177 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0959.10-100MG 2-Methylnonane, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 871-83-0 Price on request 96583 Dextromethorphan Price on request 2926.5-100-AN Desisopropylatrazine-d5 (ethyl-d5), 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 1189961-78-1 Price on request