EPA Method 8330 Analyte Back Catalog number: 79250 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678427 Heptachlor-exo-epoxide, 100 µg/ml, Acetonitrile, Price on request 50699 IC Standard 1A Price on request 94743 o-Aminoazo-p-toluene Price on request