Objective:To explore the way of system maintaining the automatic instrument of coagulation. to ensure the quality of coagulation result and improve the life time of the instrument.

目的：探索全自动血凝仪的系统维护方法，保证血凝结果的质量，提高仪器的使用寿命。

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Methods 3 copies of fresh whole blood coagulation instrument from the 4 in 1 hour and measured to calculate the measured values of CV and range.

方法应用3份抗凝新鲜全血由4台仪器在1个小时内测定，计算其测定值CV和极差。

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