This standard specifies the method for the determination of cobalt content in zirconium and zirconium alloys. This standard applies to the determination of cobalt content in zirconium and zirconium alloys. Measuring range: 0.0005% to 0.0050%.
GB/T 13747.8-1992 history
2017GB/T 13747.8-2017 Methods for chemical analysis of zirconium and zirconium alloys—Part 8:Determination of cobalt content—Nitroso-R-salt spectrophotometry
1992GB/T 13747.8-1992 Zirconium and zirconium alloys--Determination of cobalt content--1-nitroso-2-hydroxy-3.6-naphthalene-disulfonic acid(sodium salt) spectrophotometric method