Method 1640Mix A Back Catalog number: 53146 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 64688 Chlorpyrifos, 100µg/mL in MeOH, 1ml Price on request 0296.19-200-T 5-Methylchrysene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 3697-24-3 Price on request 1131.11-10MG n-Undecane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1120-21-4 Price on request