KS M ISO 746-2019(2024)
Sodium carbonate for industrial use — Determination of matter insoluble in water at 50 degrees C
DB13/T 1228-2010
GB/T 16484.16-2009
Chemical analysis methods of rare earth chloride and light rare earth carbonate - Part 16: Determination of water insoluble substance content in rare earth chloride - Gravimetry
HG/T 3534-2011
GB/T 16484.16-1996
Methods for chemical analysis of rare earth chloride and carbonate—Determination of water insoluble matter content in rare earth chloride
HG/T 3534-2003
Industrial circulating cooling water-Determination of undissolved material in acid,phosphorus,ferrum,aluminium,calcium,magnesium,zinc and copper for sludge and corrosion products