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Tin-lead solders--Determination of copper content--2,9-dimethyl-1,10-phenanthroline spetrophotometric method
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STANDARD published on 22.3.1989
Designation standards: GB/T 10574.7-1989
Note: WITHDRAWN
Publication date standards: 22.3.1989
SKU: NS-1171691
Country: Chinese technical standard
Category: Technical standards GB
Latest update: 2026-10-05 (Number of items: 2 304 304)
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