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ZWF4型注射液微粒分析仪是用于检测注射液中不溶性微粒含量的专用仪器，其工作原理与化验仪器中常见的英国库尔特血球计数器基本相同，都采用了水银压力计形成负压，使被测试样通过宝石小孔管转换成脉冲电压信号进行计数测量的。不同的是微粒分析仪的检测灵敏度要远远高于血细
ZWF4 injection particle analyzer is a special instrument for detecting the content of insoluble particles in the injection solution. Its working principle is basically the same as the British Coulter blood cell counter commonly used in laboratory instruments. Mercury pressure gauges are used to form negative pressure. The sample under test is converted into a pulsed voltage signal through a gem hole tube for counting and measurement. The difference is that the detection sensitivity of particle analyzer is much higher than that of blood thinning.