EPA Method 548.1 Analyte Back Catalog number: 30077 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9923.9-K-CY n-Propylcyclohexane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 1678-92-8 Price on request 1169.16-K-IO 2,2,4,4,5,5,7,7-Octamethyloctane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 5171-85-7 Price on request 685230 Ergocalciferol, 250mg Price on request