Copper (Cu) Back Catalog number: 57429 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50651 6020Low Intermediate Standard - Parent Price on request 3858.17-1G Hansa Yellow G, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 2512-29-0 Price on request 8865.9-K-IO 2-Methylquinoxaline, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. Price on request