PCB Congeners & Hexachlorobenzene Mix #4 Back Catalog number: 95453 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90125 Aroclor 1232 Price on request 679091 Flame-Retardant-Mix 4, 100 µg/ml, Methanol, 5ml Price on request 673186 Aclonifen, 10.0 µg/ml, Acetonitrile, 10ml Price on request