EPA Method 515.1 Internal Standard Back Catalog number: 30023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended HPCB-3006N 4-Hydroxy-2',4',6'-trichlorobiphenyl, 10mg Price on request 672867 Methomyl, 100mg Price on request 50131 ICP-MS Mix Price on request