化学实验用到的大部分材料是易损的玻璃仪器和易耗的化学试剂,按照教学要求,开足开全所有实验,化学实验室每年需要开支很大一笔经费来添置仪器药品。我校地处河北省坝上地区,属于一所贫困的普通高级中学,每年的这笔开支很紧张。因此,在保证实验开出率的前提下,我们是尽可能节约每一种仪器、药品。下面谈谈 Most of the materials used in chemical experiments are fragile glass instruments and expendable chemical reagents. According to the teaching requirements, all the experiments are opened and the chemical laboratories need to spend a large amount of money each year to purchase instrumental drugs. Our school is located in the Bashang area of ​​Hebei Province and belongs to a poor general high school. The annual expenditure is very tight. Therefore, on the premise of guaranteeing the rate of experimentation, we are saving every instrument and medicine as much as possible. Let’s talk about