EPA Method 548.1 Analyte Back Catalog number: 30177 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 91996 n-Butanol & Isobutanol Price on request 2478.10-100-IO Dimethyl phthalate-3,4,5,6-d4, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 93951-89-4 Price on request 1138.18-K-IO n-Octadecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 593-45-3 Price on request