EPA Method 552.1 - Surrogate Standard Back Catalog number: 31057 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended F421000 Fluconazole, 50mg Price on request 9473.9-100-ME Levetirazetam, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 102767-28-2 Price on request 9527.24-K-ME Candesartan, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 139481-59-7 Price on request