Chlorpyrifos Back Catalog number: 70090 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 30005 Fortification sol.,2000ug/ml in MeOH,1ml Price on request 93943 Semi-Volatile Standard Price on request 0239.20-10MG Benzo[a]pyrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 50-32-8 Price on request