IP 391-95 Calibration Level 4 Back Catalog number: 98404 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90166 Aroclor 1268 Price on request 3948.1-1ML Trichlorofluoromethane, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 75-69-4 Price on request DF-IS-D40 Mass-Labelled PCDD/PCDF Internal Standard Solution, 1.2ml, nonane Price on request