Calibration Standard Set Back Catalog number: 52042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1088.20-400-CY Benzo[a]pyrene-d12,400µg/mL,cyclohexane,1mL, Price on request 93714 n-Hydrocarbon Standard Price on request 50693 ICP Spike Solution Price on request