VPH Primary Calibration Rev 1.1 Back Catalog number: 51167 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 13-B-278-CDF 1,3-Dibromo-2,7,8-trichlorodibenzofuran, 1.2ml x 50ug/ml, toluene Price on request 677374 Benzoin, 100 µg/ml, Acetonitrile, 5ml Price on request 92636 TPH Internal Standard Price on request