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什么是比色管

更新时间: 2020-09-17 00:00:00     

比色管是化学实验中用于目视比色分析实验的主要仪器,可用于粗略测量溶液浓度。比色时将装待测溶液的比色管与一支装标准溶液的比色管置于光照程度相同的白纸前面进行对比,用肉眼观察颜色差异。比色管的外型与普通试管相似,但比试管多一条精确的刻度线并配有橡胶塞或玻璃塞,且管壁比普通试管薄,常见规格有10ml、25ml、50ml三种。

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