Copper (Cu) Back Catalog number: 57229 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673565 Endrin, 10.0 µg/ml, Ethyl acetate, 10ml Price on request 98246 WI-7.6-30 Butyl-Ethyl Paraben Standard Price on request 0723.12-K-IO 1,4-Dimethylnaphthalene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 571-58-4 Price on request