Copper (Cu) - 7 PPM Back Catalog number: 50744 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3961.0-10ML Refinery gasoline oxygenate free, neat, Solvent-neat, Unit 10mL, # of units-1, Cas.no. Price on request 72068 Dibenzothiophene-d8 Price on request XA17723600AC 1,3,5-Trichlorobenzene D3, 100 ng/µl, 1.1ml Price on request