4,4'-DDE, 100 µg/ml, Toluene, 5ml Back Catalog number: 675841 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 72331 N-Nitroso-N-methylaniline Price on request 73371 Trioctyl trimellitate, 1000μg/ml in methylene chloride, 1ml Price on request 678390 Dicofol, 100 µg/ml, Acetonitrile, 5ml Price on request