EPA Method 515.1 Analytes - Underivatized Back Catalog number: 83596 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10635.12-50-T 1,2,3,7,8,9-Hexachlorodibenzofuran Price on request 81204 EPA Method 8121 Surrogate Standard Price on request 70169 Endosulfan sulphate Price on request