We also sell copper with 99% purity, our specification is as followCopper (cu) 99. 99% . Other materials may be present which are described below: Oxygen o2 --Sulfur s 4 ppmIron fe 2 ppmSilver ag 10 ppmLead pb 0. 2 ppmNickel ni 0. 2 ppmSelenium se 0. 3 ppmAntimony sb 0. 1 ppmSilica si 0. 3 ppmCobalt co 0. 2 ppmArsenic as 0. 1 ppmBismuth bi 0. 1 ppmManganese mn 0. 1 ppmTellurium te 0. 05 ppmAluminum al 0. 5 ppmMagnesium mg 0. 4 ppmZinc zn 0. 4ppmLet me know if you are interest and your prompt reply is greatly appreciated, and we could give you the most competitive rate in the market.