Spiking Standard 5 Back Catalog number: 52067 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8996.21-100-ME Corticosterone, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 50-22-6 Price on request 30170 EPA Method 632 - Analytes Price on request 675970 Heptadecafluorooctanesulfonic acid potassium salt, Price on request