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美国贝克曼公司生产的E4A电解质分析仪可快速准确的测定钠钾氛和二氧化碳的含量，并能计算出阴离子间隙。我们在使用过程中曾遇到过不少管道系统方面的问题，现仅就其管道系统的维修保养，结合工作实际做一简要的介绍。1管道系统的组成该系统主要由试剂管道和蠕动泵管道两部分
The E4A electrolyte analyzer produced by Beckman USA can quickly and accurately determine the sodium, potassium and carbon dioxide contents and calculate the anion gap. In the course of its use, we encountered a lot of problems in the piping system. Now we only provide a brief introduction to the maintenance of the piping system and the actual work. 1 The composition of the piping system The system is mainly composed of two parts: reagent piping and peristaltic pump piping.