4,4'-DDD, 100 µg/ml, Methanol, 1ml Back Catalog number: 679457 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 94490 Sulfur Check Standard Price on request 680355 Cefalexin monohydrate, 250mg Price on request 9439.8-100-CY Demeton O Price on request