4,4'-DDD, 10.0 µg/ml, Ethyl acetate, 10ml Back Catalog number: 673529 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 50738 Nitrite as NO2- Price on request 50281 QC-7A - ICP Optical Price on request 680120 Isopropylbenzene, 500mg Price on request