GB/T 6276.1-2008 Focused industrial carbonic acid ammonium hydrogen content determination. The first part of the standard adopts the acid-base Titrimetric method, which is suitable for all kinds of industrial carbonic acid ammonium hydrogen products. The principle is to use carbonic acid ammonium hydrogen to neutralize with a known concentration of acid, and calculate the content of carbonic acid ammonium hydrogen by consuming the amount of acid. The standard specifies the required instruments, such as Burette, etc., and specifies the preparation and calibration method of the standard acid solution. Detailed sample collection, preparation and titration operation procedures, including stirring during titration, titration speed control and endpoint judgment basis. According to this standard, industrial carbonic acid ammonium hydrogen content can be accurately determined, providing key data for product mass control.