Copper (Cu) - 1 PPM Back Catalog number: 50590 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C14731500 Malonic acid-dimethyl ester, 250mg Price on request 10259.9-1G Allyl sorbate, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 7493-75-6 Price on request 57131 Gallium (Ga) Price on request