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众所周知,化学是一门以实验为基础的自然科学,滴管是化学实验中的一种常用仪器。传统的胶头滴管主要由橡胶头和玻璃尖管两部分组成,其中玻璃尖管在使用时很容易损坏,造成吸取和滴加液体困难,报废率高。本文主要从实验器材的角度对胶头滴管进行了改进,以废弃塑料为原材料,自制了一种安全滴管,其突出特征是盛液时可以横放或倒置、尖嘴管不容易损坏、报废率低。学生可以利用身边的废弃塑料制作这种仪器,自主进行实验探究,培养他们的实践能力和创新精神。
As we all know, chemistry is an experimental-based natural science. Dropper is a commonly used instrument in chemical experiments. The traditional rubber dropper is mainly composed of a rubber head and a glass pipette. The glass pipette is easily damaged during use, which makes it difficult to draw and drop the liquid, and the rejection rate is high. This article mainly from the perspective of experimental equipment plastic head dropper has been improved to plastic waste as raw materials, made a safe dropper, the salient feature is the liquid when you can horizontal or inverted, sharp-headed tube is not easy to damage, Low scrap rate. Students can use the plastic waste around them to make such devices, conduct experiments and explore on their own, and develop their practical ability and innovative spirit.