2,4'-DDD, 100 µg/ml, Ethyl acetate, 5ml Back Catalog number: 673528 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 83560 p-Tolualdehyde-DNPH, 100µg/ml in Acetonitrile, 1ml Price on request 79628 Theophylline Price on request 97130 VOC Standard Price on request