Standard material for salt content determination

Total Salt Content Standard Solution for Water: This standard solution is prepared using high-purity substances and laboratory-grade water as raw materials, employing the gravimetric-volumetric method.

Standard reference materials for salt content determination are diverse, and depending on the specific measurement object and method, they primarily include standard solutions for total salt content in water, standard reference materials for salt content in crude oil, and standard reference materials for iodine component analysis in edible salt, among others. The following provides a detailed introduction:
Total Salt Content Standard Solution for Water: This standard solution is prepared using high-purity substances and laboratory-grade water as raw materials, employing the gravimetric-volumetric method. It is used for the analysis and testing of total salt content in water, method validation and evaluation, as well as laboratory quality control. Its shelf life is typically 24 months.
Crude oil salt content standard material: The salt content of crude oil is commonly determined using the coulometric method. The solution standard material developed by the Chinese Academy of Metrology for calibrating salt content analyzers can be used for such determinations. This standard material is prepared using the gravimetric-volumetric method and meets the requirements for calibrating crude oil salt content analyzers, confirming and evaluating analytical measurement methods, and ensuring petroleum product quality.
Standard materials for iodine content analysis in edible salt: Prepared using iodine-free refined salt as raw material and potassium iodate as the iodine reagent, these standard materials are primarily used for determining iodine content in edible salt and can also be used for evaluating measurement methods, among other applications. They are applicable to standards such as GB 26878-2011 “National Food Safety Standard: Iodine Content in Edible Salt.”
Additionally, there are standard solutions for determining the content of metal ions such as calcium, magnesium, and iron in industrial salt, such as calcium standard solution and magnesium standard solution. These standard materials are typically provided by commercially available certified standard materials and can be used to plot standard curves when determining the content of metal ions in industrial salt using methods such as inductively coupled plasma atomic emission spectroscopy.

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