2,2’,4,4’,6,6’-Hexachlorobiphenyl (155) Back Catalog number: 66155 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended DF-IS-H Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request 673733 Aminocarb, 100 µg/ml, Ethyl acetate, 5ml Price on request 93294 Urea Stock Solution Price on request