JB/T 7520.5-1994 Chemical analysis method for phosphorus copper brazing filler metal Determination of tin content with hypophosphite reducing volumetric method (English Version)
This standard specifies the determination of tin content using the hypophosphite reduction capacity method. This standard is applicable to the determination of tin content in phosphorus copper solder, with a measurement range of 7.00% to 11.00%.
JB/T 7520.5-1994 history
2017JB/T 7520.5-2017 Chemical analysis methods for copper-based solders Part 5: Determination of tin content
1994JB/T 7520.5-1994 Chemical analysis method for phosphorus copper brazing filler metal Determination of tin content with hypophosphite reducing volumetric method