我院使用ＺＷＦ—４型注射液微粒分析仪多年，工作性能稳定，使用中由于种种原因常出现微孔管堵塞和负压泵不停，致使进样时间延长和测试时无数据显示。前者据仪器说明书较易排除，如：负压排气法、负压清洗法、注水加压法和浸泡法都很有效，其中负压排气、清洗在每次测试前都 Our hospital uses the ZWF-4 injection particle analyzer for many years, and its working performance is stable. Due to various reasons, the microporous tube clogging and the negative pressure pump often stop during use, resulting in prolonged injection time and no data display during testing. The former can be easily eliminated according to the instrument manual, such as: negative pressure exhaust method, negative pressure cleaning method, water injection pressure method and immersion method are very effective, including negative pressure exhaust, cleaning before each test