4,4'-DDD, 100 µg/ml, Acetonitrile, 5ml Back Catalog number: 678378 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 63128 2,2’,3,3’,4,4’-Hexachlorobiphenyl (128) Price on request 71470 tert-Amyl methyl ether Price on request 71641 Propyl sulfide Price on request