Method 1640Mix A Back Catalog number: 52146 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0411.40-150-CY n-Tetracontane, ?13C: -27.05, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 4181-95-7 Price on request 32103 EPA Method 551.1 Internal Standard Price on request 3504.6-100 Tecnazene, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 117-18-0 Price on request