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Who knows how to detect the content of sodium nitrate?
GB/T? 4553-2002? Industrial sodium nitrate?

This standard specifies the requirements, test methods, inspection rules, signs, labels, packaging, transportation, storage and safety of industrial sodium nitrate.

This standard is applicable to industrial sodium nitrate. This product is an important chemical raw material, widely used in glass, explosives, dyes, metallurgy, machinery, enamel and other industries.

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