EPA Method 552,552.1,552.2 Internal Std Back Catalog number: 30105 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73165 Hexadecanoic acid Price on request BDF-24 2,4-Dibromodibenzofuran, 1.2ml x 50ug/ml, toluene Price on request 672886 Tecnazene, 250mg Price on request