IP 391-95 Calibration Level 4 Back Catalog number: 98404 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673551 Dieldrin, 10.0 µg/ml, Ethyl acetate, 10ml Price on request L469375 Lofentanil, 1mg Price on request 2031.12-50-T 2,7-Dichlorodibenzo-p-dioxin, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 33857-26-0 Price on request