T/ZJGFTR 021-2022
T/HNNMIA 23-2023
T/HNNMIA 22-2023
DZ/T 0424.2-2022
DZ/T 0396.1-2022
DZ/T 0424.1-2022
DB63/T 1431-2015
DB63/T 1432-2015
YS/T 807.12-2012
Chemical analysis methods of aluminum hardeners—Part 12:Determination of copper content—Sulfur and sodium titration method
T/CSTM 00780.3-2023
DZ/T 0452.1-2023
ISO 2760:1975
Crude sodium borates for industrial use — Determination of total aluminium content — Titrimetric method