EPA Method 548.1 Internal Standard Back Catalog number: 30078 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 43130 Pesticide Decomposition Standard Price on request 679372 Heptachlor-exo-epoxide, 10 µg/ml, Cyclohexane, 1 Price on request 96388 Thiacloprid Price on request