Shanghai Huaai Chromatography Analysis Technology Co., Ltd. is a high-tech enterprise in Shanghai, a member of the National Gas Standardization Technical Committee, a member of the National Gas Standardization Test Research and Verification Chromatography Platform, a member of the Gas Sub Technical Committee of the National Semiconductor Equipment and Materials Standardization Technical Committee, a director unit of the China Industrial Gas Association, and a vice chairman unit of the Gas Analysis Technology and Instrument Equipment Professional Committee of the China Industrial Gas Association. The company is committed to the research and production of specialized chromatography instruments in the fields of industrial gas and power systems, and is a well-known specialized chromatography manufacturer in China.

GC-9560Food additive nitrogen dedicated gas chromatographIt is a specialized gas chromatograph developed by Shanghai Huaai Chromatography Analysis Technology Co., Ltd. based on the detection requirements of O2, CO, and CO2 in GB 29202-2012 "Nitrogen for Food Additives". The detection limits are CO ≤ 0.1ppm, CO2 ≤ 0.1ppm, and O2 ≤ 0.01%.

GB 29202-2012 "National Food Safety Standard - Food Additive Nitrogen" was released by the Ministry of Health on December 25, 2012 and officially implemented on January 25, 2013.

This standard is applicable to nitrogen production from cryogenic air separation, pressure swing adsorption, membrane separation, as well as food additive nitrogen produced by small specialized nitrogen generators.