EPA Method 8021B Internal Standard Back Catalog number: 19394 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended FRS-053S-0.5X Ethylene bis(tetrabromophthalimide), 50µg/ml in Toluene, 1ml Price on request 1923.14-10MG 3-Fluoro-6-hydroxyphenanthrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. Price on request 0332.18-K-IO n-Dodecylbenzene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 123-01-3 Price on request