LY/T 2862-2017
Pyrogallic acid
DB52/T 741-2012
HB 5220.35-2008
Methods for chemical analysis of superalloys-Part 35:Determination of tantalum content by pyrogallic acid photometric method
YS/T 746.1-2010
Methods for chemical analysis of lead-free tin-based solders—Part 1:Determination of tin content—Pyrogallic acid demasking-lead nitrate titrimetric method