2,2',3,4',5,6,6'-Heptachlorobiphenyl (188) Back Catalog number: 66188 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94864 1664 Oil & Grease Calibration Level #2 Price on request 71909 3,4-Dichlorotoluene Price on request 34181 Propionitrile Price on request