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近年来,微型化学实验已在基础实验中逐步推广。为了使微型化学实验能应用于作精确的定量测定,必须设计高精度的微型量器。为此,我们曾在中级无机化学实验教学中设计和制作了适用于PH电位滴定和一般滴定法的微量滴定装置,或称高精度微量注入器。本文扼要介绍该仪器的结构特点和使用方法。 1.高精度微量注入器的结构和特点 在PH电管法和酸碱滴定中,为了节省试剂和实验时间,滴加的溶液体积要少些但必须准确。采用我们研制的微量注入器,体积读数可准确到 0.001ml,精度比一般滴定装置提高
In recent years, micro-chemical experiments have been gradually promoted in basic experiments. In order to make micro-chemical experiments can be used for accurate quantitative determination, we must design a high-precision micrometer. To this end, we have in the intermediate inorganic chemistry experiment teaching designed and produced for the PH potential titration and general titration microtiter devices, or high-precision micro-injectors. This article briefly describes the structure and use of the instrument features. 1. The structure and characteristics of high-precision microinjector In the PH tube method and acid-base titration, in order to save reagents and experimental time, the volume of solution added to be less but must be accurate. Using our developed micro-injector, the volume reading can be accurate to 0.001ml, the accuracy of the titration device than the average increase