MA - VPH Primary Calibration Spike Back Catalog number: 91757 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0416.13-150-CY n-Tridecane, ?13C: -33.47, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 629-50-5 Price on request 92575 EPA Method 8240B - Purgeable Internal Standard Price on request 70329 Benzal chloride Price on request