用塑料瓶代替玻璃集气瓶等进行某些化学实验,安全可靠,操作简便。可选购大小适宜的聚乙烯塑料瓶,仿下法制作洗瓶、储气瓶等,并应用于实验教学。一、洗瓶按图1加配橡皮塞和玻璃管与玻璃尖嘴弯管。二、储气瓶把洗瓶上的尖嘴玻璃管拆下,换上用胶管制成的封帽(见图2),即可 The use of plastic bottles instead of glass cylinders for certain chemical experiments is safe, reliable and easy to operate. Can choose the appropriate size of polyethylene plastic bottles, imitation method of making bottles, gas bottles, etc., and applied to experimental teaching. First, wash the bottle according to Figure 1 plus rubber stopper and glass pipe and glass needle bend. Second, the gas cylinder removes the needle-nozzle glass tube from the bottle and replaces it with a cap made of a rubber tube (see Figure 2).