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Hi, I`m working on a gold plant as a consultant. I find out that they are using caustic after the elution. For what purpose will they use caustic after the elution? What was explained to me was that it`s for conductivity. What will be a good number in regards to conductivity? How much siemens per meter? How can we help them optimize the usage? Should they dilute the caustic to 2% as well or keep it at the delivered strength?