EPA Method 552 Internal Standard Back Catalog number: 30055 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79632 Cyfluthrin, “Baythroid”, 1000µg/ml in Acetonitrile, 1ml Price on request A632945-1G Amiodarone, 1g Price on request 10659.6-25-AN U-{13C6}-Kojic Acid Price on request