EPA Method 550 Analytes Back Catalog number: 31051 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 682258 Benzothiazole, 1000mg Price on request 674394 cis-1,2,3,6-Tetrahydrophthalimide, 1000mg Price on request 680566 Heptachlor-exo-epoxide, 10 µg/ml, Acetonitrile, Price on request