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大多数的溶液导电性测试实验离不开低压电源、灯泡、石墨电极等一大堆仪器和比较复杂的实验装置,这样的实验装置不仅难移动,操作繁琐,耗能大,而且待测溶液的用量大,不能灵敏地测试出自来水的弱导电性,达不到区别强弱电解质的效果,无法准确地说明电解质溶液中离子浓度对溶液导电性的影响,实验说服力差。为此,可利用废旧物品制作一种新型溶液导电性测试笔。该仪器小巧轻便,原材料廉价易得,构造简单易加工,操作简单方便,且能灵敏地测试出自来水的导电性。
Most of the solution conductivity test can not do without a lot of low-voltage power supply, light bulb, graphite electrode and a large number of instruments and more complex experimental device, this experimental device is not only difficult to move, cumbersome operation, energy consumption, and the solution to be tested Large amount, can not be sensitive to test the poor conductivity of tap water, can not reach the difference between the strength of the electrolyte effect, can not accurately explain the ion concentration of the electrolyte solution on the conductivity of the solution, poor persuasion. To this end, waste materials can be used to make a new solution conductivity test pen. The instrument is small and lightweight, cheap raw materials, easy to construct, easy to operate, and can be sensitive to test the conductivity of tap water.