4,4'-DDD, 100 µg/ml, Toluene, 5ml Back Catalog number: 675989 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 91833 WS Benzo(a)pyrene - Cal Check Price on request MICQC2 Total, Fecal & E. Coli WP IN Price on request 2125.12-K-IOX10 Arochlor 1221 , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 11104-28-2 Price on request