EPA Method 551.1 Surrogate Standard Back Catalog number: 31102 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9907.2-K-ME N-Nitro-1,3-oxazolidin-2-one, 1000µg/mL, Solvent-methanol, Unit 1.1mL, # of units-1, Cas.no. Price on request 10403.2-50MG O,O-Dimethylhydrogenphosphate Price on request 9402.16-100-ME Norfluoxetine hydrochloride, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 57226-68-3 Price on request