This Standard specifies the methods for determining nitrite and nitrate in foods. Method I of this Standard applies to the determination of nitrite and nitrate in foods (excluding foods for special medical purposes containing partially hydrolyzed milk protein, extensively hydrolyzed milk protein, amino acid formulas, and amino acid metabolism disorder formulas). Methods II and III of this Standard are applicable to the determination of nitrite and nitrate in foods. Method IV of this Standard is applicable to the determination of nitrate in fresh vegetables and fruits. Method I - Ion chromatography
Basic Data
Standard ID
GB 5009.33-2025 (GB5009.33-2025)
Description (Translated English)
National food safety standard - Determination of nitrite and nitrate in foods
Sector / Industry
National Standard
Classification of Chinese Standard
C53
Word Count Estimation
22,265
Date of Issue
2025-09-02
Issuing agency(ies)
National Health Commission; State Administration for Market Regulation
