2,4'-DDE, 100 µg/ml, Acetonitrile, 5ml Back Catalog number: 678379 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 92413 Organophosphorous Standard Price on request 18000-2529-100ME5 Guanylurea-HCl, 100µg/ml in MeOH, 5ml Price on request 682071 m-Toluidine, 100 µg/ml, Methanol, 5ml Price on request