2,3',4,4',5',6-Hexachlorobiphenyl (168) Back Catalog number: 66168 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 19394 EPA Method 8021B Internal Standard Price on request 83609 Hexanaldehyde-DNPH, 100µg/ml in Acetonitrile, 1ml Price on request 674585 Dextromethorphan hydrobromide monohydrate, 250mg Price on request