EPA Method 548.1 Internal Standard Back Catalog number: 30078 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 672916 Sulfosulfuron, 100mg Price on request 673452 Thiacloprid, 10.0µg/ml, Acetonitrile, 10ml Price on request 96033 o-Cresol-d8 & p-Cresol-d8 Price on request