EPA Method 8330 Analyte Back Catalog number: 79077 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 684571 D10-Napropamide, 100 µg/ml, Acetonitrile, 1ml Price on request 680983 Metoprolol tartrate, 100 µg/ml, Methanol, 1ml Price on request 95486 Fluorobenzene Price on request