EPA 1638Mix A Back Catalog number: 53144 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73060 Fentanyl Price on request 93678 EPA Method 8270 Additional Analytes Price on request 3806.10-K-IO Monoethyl phthalate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2306-33-4 Price on request