EPA Method 548.1 Internal Standard Back Catalog number: 30078 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679787 Fenoxanil, 100mg Price on request 70951 Ronnel (Fenchlorphos), 1000µg/ml in MeOH, 1ml Price on request 683258 Thiamethoxam Metabolite CGA 353968, 25mg Price on request