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See Chinese contents: GB/T 10574.11-2017 GB/T 10574.11-2017: Methods for chemical analysis of tin-lead solders -- Part 11: Determination of phosphorus content -- Crystal violet phosphorus-vanadium-molybdenum heteropoly acid spectrophotometry
This Part of GB/T 10574 specifies the determination of phosphorus content in the tin-lead solders. This Part is applicable to the determination of phosphorus content in the tin-lead solders. The measurement range is 0.0005% ~ 0.0100%. This Part belongs to the arbitration analysis method.
