YS/T 372.13-1994 Methods for elementary analysis of precious alloy. Determination of tin content. EDTA complexometric titration was changed to YS/T 372.1-2006 Methods for elementary analysis of precious alloy. Determination of silver content. Potentiometer titration with potassium iodide.
YS/T 372.13-1994 Methods for elementary analysis of precious alloy. Determination of tin content. EDTA complexometric titration was changed to YS/T 372.4-2006 Methods for elementary analysis of precious alloy. Determination of copper content.Complexometric titration using thiourea releasing EDTA.
YS/T 372.13-1994 Methods for elementary analysis of precious alloy. Determination of tin content. EDTA complexometric titration was changed to YS/T 372.9-2006 Methods for elementary analysis of precious alloy. Determination of nickel content.EDTA complexometric titration .
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