EPA Method 552.2 - Surrogate Standard Back Catalog number: 30109 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9472.9-100-ME Levetirazetam-d6, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request 674694 Napropamide, 100mg Price on request MT4CPME Tris(4-chlorophenyl)methanol-[13C19], 1.2ml x 50ug/ml, nonane Price on request