EPA Method 548.1 Analyte Back Catalog number: 30077 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676745 Vamidothion-sulfone, 100 µg/ml, Acetonitrile, 1m Price on request CA10931780 Butyric acid-methyl ester, 1ml Price on request AC-AQ03-030 Aqueous ethanol control EtOH AQ (0.3g/L), 10 x 3.0ml Price on request