Recently, researchers from the Laboratory Instrument Factory of the Academy of Military Medical Sciences published papers aimed at developing standard substances for ion chromatography in accordance with the national standards for substance management. It is pointed out that the reference material can be used for the verification of ion chromatograph. The article was published in the 2005 issue of PLA Journal of Preventive Medicine in 2014.
Two kinds of certified reference materials were prepared by weighing method. The homogeneity of the certified reference materials was tested by F, the stability of the certified reference materials was tested by t, and the uncertainty of the certified reference materials was evaluated.
The certified reference material was homogeneous and stable in 12 months. The relative uncertainty of chloride ion component analysis solution and sulfate ion component analysis solution in water was 0.5%, and the expanded uncertainty was about 1%(k=2).