GB/T 6909-2018 《Analysis of water used in boiler and cooling system—Determination of hardness》 Related products

This standard is suitable for the determination of Hardness of boiler water and chilled down water, and provides three determination methods: chrome black T method, acid chrome blue K method and potential Titrimetric method. The standard covers the measurement range of Hardness, reagent preparation, test steps and result calculation. It is suitable for Hardness analysis of natural water, chilled down water, softening water and boiler feed water, and provides technical basis for boiler water quality control.