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 3171.23-K-IO Methyl docosanoate (Methyl behenate), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 929-77-1 Price on request DF-IS-C40 Mass-Labelled PCDD/PCDF Internal Standard Solution, 1.2ml, nonane Price on request 675670 Tebutam, 10.0 µg/ml, Ethyl acetate, 10ml Price on request