Abstract: To align with the training objectives of the Chemical Metrology and Technology major, an experimental course on self-assembling ion chromatography instruments has been integrated into undergraduate laboratory teaching. By engaging in the hands-on assembly and optimization of these instruments, students deepen their understanding of ion chromatography principles and structures, enhancing their practical skills and innovative thinking. The experiment utilizes commercial components alongside custom-made parts to construct a fully functional ion chromatography system, calibrate its parameters, and evaluate its performance. Additionally, it analyzes anion concentrations in real water samples such as tap water, lake water, and beverages, yielding positive educational outcomes. This experimental design exemplifies the assembly of ion chromatography instruments, showcasing the design concepts and implementation processes involved, with the aim of inspiring more educators and students to engage in instrument design and the development of new methodologies.

Key words: Ion chromatography, Self-built instruments, Laboratory teaching