EPA Method 552,552.1,552.2 Internal Std Back Catalog number: 30105 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended X9187 Pyridine Price on request 677134 5-Hydroxyflunixin, 10mg Price on request 8995.21-100-ME Cortisol, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 50-23-7 Price on request