3 故障三，样品针没有检测到样品（no sample detected） 3.1 原因 （1）蠕动泵管老化；（2）吸样针位置不当，向下掉；（3）进样管道堵塞；（4）进样电磁阀坏。
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The positive sample detected by the different reagent respective had no consistent, but the negative sample detected by the different reagent respectively had higher consistent (97.45%).
两厂家试剂检测的阳性标本没有对应，阴性结果符合率较高（97.45%）。
Results: in TLC, special spots of Inula cappa DC, Radix Glycyrrhizae and Borneolum were detected respectively. There was no any corresponding spot at the same position of negative sample.
结果：在薄层色谱中分别检出羊耳菊、甘草、冰片的特征斑点，阴性对照无干扰。
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