4,4'-DDA, 100mg Back Catalog number: 681820 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 676233 Endosulfan-sulfate, 100 µg/ml, Cyclohexane, 1ml Price on request NIST-1947 Lake Michigan fish tissue -Org. contaminants, 5x8g Price on request 1616.14-10MG 4-Methyldiphenylmethane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 620-83-7 Price on request