IP 391-95 Calibration Level 2 Back Catalog number: 98402 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673467 Triforine, 100 µg/ml, Acetonitrile, 5ml Price on request 70851 Tetradifon Price on request DF-234678-S 2,3,4,6,7,8-Hexachlorodibenzofuran , 1.2ml x 50ug/ml, nonane Price on request