Calibration Standard Mix 4 Back Catalog number: 52013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8952.21-100-ME 3-Chloro-1,2-propandiol-1-monooleate, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request 0239.20-400-05CY Benzo[a]pyrene,400µg/mL,cyclohexane,0.5mL, Price on request 71957 6-Nitrochrysene Price on request