Internal Standard for AB SIM Back Catalog number: 94541 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0036.20-200-T Cholanthrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 479-23-2 Price on request 2829.18-50-ME Perfluorooctadecanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 16517-11-6 Price on request 11873.12-100-ME (±)-Fipronil,100 µg/mL,MeOH,1mL, Price on request