EPA Method 548.1 Analyte Back Catalog number: 30177 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679375 Chlorpyrifos-methyl, 10.0 µg/ml, Cyclohexane, 10 Price on request 10628.12-50-T 1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin Price on request 70476 Benzo(j)fluoranthene Price on request