Calibration Standard Set Back Catalog number: 52032 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1539.12-K-TX5 2-Aminobiphenyl-d9, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 344298-97-1 Price on request 90121 Benzo(a)pyrene Price on request 675990 DMST, 100 µg/ml, Cyclohexane, 5ml Price on request