EPA Method 552 Internal Standard Back Catalog number: 30055 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59794 IC Mix Price on request 9402.16-10MG Norfluoxetine hydrochloride, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 57226-68-3 Price on request 682711 Mesityl oxide, 1000mg Price on request