Semi-Volatile Standard Back Catalog number: 92008 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2837.4-50-ME Perfluorobutyramide, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 662-50-0 Price on request 91161 EPA Method 525 Internals & Surrogates Price on request 80601 EPA Method 8061 - Analytes Price on request