Hi Riverbrat
Thank you for your replay. I am optimizing the conditions to determinate Zn, As, Fe, Cu and Pb in wine. I don´t include the equation for oxide when I perform the SmartTune for each element, therefore I want to know if it is necessary for the optimization or not. For all metals that can form oxides then I must perform the optimization including the equation. Am I right?
Thanks
Cris